Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9387979
V. Korolev, A. Vanin, A. Chernysheva, Rostyslav Hoienko, V. Tulsky, M. Astashev
The paper investigates problem of voltage control in power distribution networks. The negative factors contributing to the voltage deviation at consumers’ connection points are analyzed. It’s shown that voltage control using only on-load tap changers on primary substations can be insufficient in case of long-length and heavy loaded feeders. Paper describes conditions when booster transformers are to be installed and conditions when can be effectively used local voltage control on distribution transformers. Conclusions are made about the need of using various means of voltage control on different network levels depending on network structure, load flow parameters and time-domain voltage profiles.
{"title":"Multilevel Voltage Control In Power Distribution Networks","authors":"V. Korolev, A. Vanin, A. Chernysheva, Rostyslav Hoienko, V. Tulsky, M. Astashev","doi":"10.1109/REEPE51337.2021.9387979","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9387979","url":null,"abstract":"The paper investigates problem of voltage control in power distribution networks. The negative factors contributing to the voltage deviation at consumers’ connection points are analyzed. It’s shown that voltage control using only on-load tap changers on primary substations can be insufficient in case of long-length and heavy loaded feeders. Paper describes conditions when booster transformers are to be installed and conditions when can be effectively used local voltage control on distribution transformers. Conclusions are made about the need of using various means of voltage control on different network levels depending on network structure, load flow parameters and time-domain voltage profiles.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131955716","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}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388091
D. Dementev, E. Maximova, I. A. Sysoletin, A. V. Andrushin
This article discusses the influence of an additional signal (the exit velocity of the object) on the process of regulating an automatic control system (ASR) with a neuroregulator. Examples of the use of a neuroregulator in a single-circuit ASR with objects of different time characteristics are given. The studies were carried out using actuators and pulse-width modulators in the calculations. It is considered in comparison with a single-circuit control system without the input of an additional signal. The expediency of using neuroregulators in existing regulatory systems is determined. This article discusses neuroregulators that include 6 and 7 artificial neurons. The chosen model is quite simple in software implementation and is useful in experiments. The software implementation of the model of the system under consideration was performed in the Mathcad software. It is planned to implement the considered system on a laboratory stand. To evaluate and conclude conclusions on the modeled processes of managing the regulated object, the quality indicators of regulation were calculated for comparison.
{"title":"Research of the effect of an additional signal on the control process of a single-circuit automatic control system with a neuroregulator","authors":"D. Dementev, E. Maximova, I. A. Sysoletin, A. V. Andrushin","doi":"10.1109/REEPE51337.2021.9388091","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388091","url":null,"abstract":"This article discusses the influence of an additional signal (the exit velocity of the object) on the process of regulating an automatic control system (ASR) with a neuroregulator. Examples of the use of a neuroregulator in a single-circuit ASR with objects of different time characteristics are given. The studies were carried out using actuators and pulse-width modulators in the calculations. It is considered in comparison with a single-circuit control system without the input of an additional signal. The expediency of using neuroregulators in existing regulatory systems is determined. This article discusses neuroregulators that include 6 and 7 artificial neurons. The chosen model is quite simple in software implementation and is useful in experiments. The software implementation of the model of the system under consideration was performed in the Mathcad software. It is planned to implement the considered system on a laboratory stand. To evaluate and conclude conclusions on the modeled processes of managing the regulated object, the quality indicators of regulation were calculated for comparison.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131325849","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}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9387994
A. Serov, D. Chumachenko, A. Shatokhin
The absolute majority of power quality parameters are measured indirectly through the signal complex spectrum. For this reason, amplitude and phase spectrum accurate measurement is of the utmost importance. Discrete Fourier transform is most commonly used to measure the complex spectrum. The complex spectrum measurement error is associated with so-called “spectrum leakage” effect. The paper proposes a method to compensate of the “spectrum leakage” effect, based on additional frequency measurement and calculation of tuning coefficients for complex spectrum. The features of the application of the proposed method for the case of sinusoidal and polyharmonic signals are considered. Modifications are proposed for the case of applying the fast Fourier transform algorithm (FFT) and Goertzel algorithm. Analytical relations are obtained, which make it possible to estimate the amplitude and phase spectrum measurement error. By applying Matlab, simulation modeling has been performed, which makes it possible to evaluate the effectiveness of proposed technique.
{"title":"Method of Reducing the Amplitude and Phase Spectrum Measurement Error of the Power Quality Measuring Instruments","authors":"A. Serov, D. Chumachenko, A. Shatokhin","doi":"10.1109/REEPE51337.2021.9387994","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9387994","url":null,"abstract":"The absolute majority of power quality parameters are measured indirectly through the signal complex spectrum. For this reason, amplitude and phase spectrum accurate measurement is of the utmost importance. Discrete Fourier transform is most commonly used to measure the complex spectrum. The complex spectrum measurement error is associated with so-called “spectrum leakage” effect. The paper proposes a method to compensate of the “spectrum leakage” effect, based on additional frequency measurement and calculation of tuning coefficients for complex spectrum. The features of the application of the proposed method for the case of sinusoidal and polyharmonic signals are considered. Modifications are proposed for the case of applying the fast Fourier transform algorithm (FFT) and Goertzel algorithm. Analytical relations are obtained, which make it possible to estimate the amplitude and phase spectrum measurement error. By applying Matlab, simulation modeling has been performed, which makes it possible to evaluate the effectiveness of proposed technique.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133033461","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}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388072
N. O. Strelkov, V. V. Krutskikh
in this article we discuss the usage of lightweight Markdown markup language for educational and scientific writing. We start with a brief analysis of current methods and tools for document editing and publishing. Then we switch to the simple Markdown markup language and describe its extensions – Markdown Extra, RMarkdown and bookdown. The use of the latter significantly facilitates the writing of various documents for educational and scientific purposes, such as materials on practical classes for students, lecture notes, teaching materials, scientific articles and books.
{"title":"Usage of RMarkdown and Bookdown for Educational and Scientific Writing","authors":"N. O. Strelkov, V. V. Krutskikh","doi":"10.1109/REEPE51337.2021.9388072","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388072","url":null,"abstract":"in this article we discuss the usage of lightweight Markdown markup language for educational and scientific writing. We start with a brief analysis of current methods and tools for document editing and publishing. Then we switch to the simple Markdown markup language and describe its extensions – Markdown Extra, RMarkdown and bookdown. The use of the latter significantly facilitates the writing of various documents for educational and scientific purposes, such as materials on practical classes for students, lecture notes, teaching materials, scientific articles and books.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115189882","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}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9387997
M. Malsagov, G. Titova
this paper examines the renewable energy capacity in the Republic of Ingushetia in order to increase the stability of electricity supply, to cover the power shortage that hinders the industrialization of the republic, and to solve the problem of the quality of electric energy. In the Ingushetia, the problem of debt for non-payment of electricity, non-transparency of the accounting system, quality, and stability of electricity supply is acute. The authors consider the potential use of using renewable energy resources, including solar, wind, hydroelectric, and geothermal energy, and examine the major indicators of Ingushetia. The expediency of implementing decentralized energy based on renewable energy sources is investigated. The possibility of introducing intelligent networks is being considered.
{"title":"New energy production concept in the Republic of Ingushetia","authors":"M. Malsagov, G. Titova","doi":"10.1109/REEPE51337.2021.9387997","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9387997","url":null,"abstract":"this paper examines the renewable energy capacity in the Republic of Ingushetia in order to increase the stability of electricity supply, to cover the power shortage that hinders the industrialization of the republic, and to solve the problem of the quality of electric energy. In the Ingushetia, the problem of debt for non-payment of electricity, non-transparency of the accounting system, quality, and stability of electricity supply is acute. The authors consider the potential use of using renewable energy resources, including solar, wind, hydroelectric, and geothermal energy, and examine the major indicators of Ingushetia. The expediency of implementing decentralized energy based on renewable energy sources is investigated. The possibility of introducing intelligent networks is being considered.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123809936","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}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388060
I. Molotova, A. Zabirov, V. Yagov, M. Vinogradov, I. Molotov
The present paper explores the cooling processes of high-temperature cylindrical samples in ethanol-water binary mixtures with different concentrations. The cylindrical samples simulate fuel rods for nuclear power plants. The study of the occurrence of intensive boiling regime during cooling of high-temperature bodies and the possibility of predicting the surface temperature of the transition to this regime will allow substantiating the choice of a new type of tolerant fuel from the standpoint of thermophysics. The experiments were conducting with different subcoolings to the saturation temperature under atmospheric pressure. Ethanol-water mixtures (40% and 60%) were used as cooling liquids. The working sample was a nickel cylinder. It was shown that with the addition of water to ethanol, cooling processes becomes more intensive.
{"title":"An experimental study of unsteady cooling of cylindrical bodies in ethanol-water mixtures","authors":"I. Molotova, A. Zabirov, V. Yagov, M. Vinogradov, I. Molotov","doi":"10.1109/REEPE51337.2021.9388060","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388060","url":null,"abstract":"The present paper explores the cooling processes of high-temperature cylindrical samples in ethanol-water binary mixtures with different concentrations. The cylindrical samples simulate fuel rods for nuclear power plants. The study of the occurrence of intensive boiling regime during cooling of high-temperature bodies and the possibility of predicting the surface temperature of the transition to this regime will allow substantiating the choice of a new type of tolerant fuel from the standpoint of thermophysics. The experiments were conducting with different subcoolings to the saturation temperature under atmospheric pressure. Ethanol-water mixtures (40% and 60%) were used as cooling liquids. The working sample was a nickel cylinder. It was shown that with the addition of water to ethanol, cooling processes becomes more intensive.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122774655","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}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388001
Alexander I. Svistkov, A. A. Sutchenkov, A. Tikhonov
The article deals with the structure and methods of construction of the course "Problem Solving with Python" using STEM and STEAM technologies. The course is built on the principle of "visualization and problem solving head first". The techniques are offered to make the course easy to understand, including operations with NumPy arrays and slices, libraries of the Python ecosystem, domain-specific languages. It is shown that visualization in problem solving increases student interest. The techniques of conducting the course in the conditions of Covid-19 pandemic are offered.
本文论述了利用STEM和STEAM技术构建“Problem Solving with Python”课程的结构和方法。本课程建立在“可视化和解决问题的头脑优先”的原则之上。提供的技术使课程易于理解，包括NumPy数组和切片的操作，Python生态系统的库，特定于领域的语言。研究表明，在解决问题时，可视化能提高学生的兴趣。提出了在新冠肺炎大流行条件下开展该课程的技术。
{"title":"STEM and STEAM Technologies in Problem Solving with Python","authors":"Alexander I. Svistkov, A. A. Sutchenkov, A. Tikhonov","doi":"10.1109/REEPE51337.2021.9388001","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388001","url":null,"abstract":"The article deals with the structure and methods of construction of the course \"Problem Solving with Python\" using STEM and STEAM technologies. The course is built on the principle of \"visualization and problem solving head first\". The techniques are offered to make the course easy to understand, including operations with NumPy arrays and slices, libraries of the Python ecosystem, domain-specific languages. It is shown that visualization in problem solving increases student interest. The techniques of conducting the course in the conditions of Covid-19 pandemic are offered.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122296834","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}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9387990
S. Hasan, M. Rasheduzzaman, M. Hossain
COVID-19 pandemic has a landslide shock on human civilization. Due to its sudden destructive impacts on industries, commerce, education and social interactions, researchers are underway to investigate the consequences of this crisis, particularly on the electrical power consumption and environment. In this paper, the impacts of COVID-19 on the power industry of Bangladesh and its positive impacts on the environment have been investigated through the estimation of the reduction of power generation and CO2 emission during the months of April to July in 2020 and 2019. It is found that there was a 16.96% reduction of peak power generation in the month of May 2020 compared with that of May 2019. On the contrary, the CO2 emission was reduced by 12.23% on average, with a maximum reduction of 22.29% in May 2020. Both the indicators have a correlation with the severity of the pandemic in the month of May 2020.
{"title":"Impacts of COVID-19 on the Electrical Power Dynamics and Environment of Bangladesh","authors":"S. Hasan, M. Rasheduzzaman, M. Hossain","doi":"10.1109/REEPE51337.2021.9387990","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9387990","url":null,"abstract":"COVID-19 pandemic has a landslide shock on human civilization. Due to its sudden destructive impacts on industries, commerce, education and social interactions, researchers are underway to investigate the consequences of this crisis, particularly on the electrical power consumption and environment. In this paper, the impacts of COVID-19 on the power industry of Bangladesh and its positive impacts on the environment have been investigated through the estimation of the reduction of power generation and CO2 emission during the months of April to July in 2020 and 2019. It is found that there was a 16.96% reduction of peak power generation in the month of May 2020 compared with that of May 2019. On the contrary, the CO2 emission was reduced by 12.23% on average, with a maximum reduction of 22.29% in May 2020. Both the indicators have a correlation with the severity of the pandemic in the month of May 2020.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114610360","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}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388080
T. Z. Htay, Vladimir G. Komapov, V. Glushenkov
The urban public transports are the most important infrastructure closely related with the life of people. The high-energy efficiency of the multifunctional magnetic levitation transport system "ELTRO" makes it possible to use solar energy as the main energy source of the system in the conditions of the Republic of Myanmar. To solve this complex scientific and technical problem, appropriate software used to support the stages of the system's life cycle. In order to provide interactive map and the real-time passenger traffic of the magnetic levitation system integrated with the programming language of Python, its libraries and Jupyter Notebook. The innovative ELTRO system is to ensure uniform descriptions and semantic interpretation of data, regardless of the place and time of their receipt in a common system that has scales up to global.
{"title":"Creation of an interactive geo-information model of the multifunctional magnetic levitation transport system ELTRO in Naypyidaw, Republic of Myanmar","authors":"T. Z. Htay, Vladimir G. Komapov, V. Glushenkov","doi":"10.1109/REEPE51337.2021.9388080","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388080","url":null,"abstract":"The urban public transports are the most important infrastructure closely related with the life of people. The high-energy efficiency of the multifunctional magnetic levitation transport system \"ELTRO\" makes it possible to use solar energy as the main energy source of the system in the conditions of the Republic of Myanmar. To solve this complex scientific and technical problem, appropriate software used to support the stages of the system's life cycle. In order to provide interactive map and the real-time passenger traffic of the magnetic levitation system integrated with the programming language of Python, its libraries and Jupyter Notebook. The innovative ELTRO system is to ensure uniform descriptions and semantic interpretation of data, regardless of the place and time of their receipt in a common system that has scales up to global.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125667855","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}
Pub Date : 2021-03-11DOI: 10.1109/REEPE51337.2021.9388029
O. Loktionov
Prevention of accidents is one of the key paradigms of occupational safety at work. The main mechanism aimed at minimizing potential hazards is a systematic review and analysis of the causal relationships of occupational injuries. The task of reducing the possible probability of injury and its consequences has a multi-factor structure, since it requires the restoration of the circumstances of the situation, their analysis and lessons learned, and the procedure for predicting industrial injuries depends on the type of mathematical model chosen and the quality of the initial data to be further analyzed. The paper analyzes sequential, complex linear and non-linear models and methods for assessing the cause-and-effect relationships of accidents, identifies key provisions and results. Based on the analysis of the scope, advantages and disadvantages, recommendations for the implementation of methods of predictive analysis of injuries in Russia are formed.
{"title":"Comparative Analysis of Injuries Models and Methods Assessment in Power Industry with Cause-and-Effect Relationship","authors":"O. Loktionov","doi":"10.1109/REEPE51337.2021.9388029","DOIUrl":"https://doi.org/10.1109/REEPE51337.2021.9388029","url":null,"abstract":"Prevention of accidents is one of the key paradigms of occupational safety at work. The main mechanism aimed at minimizing potential hazards is a systematic review and analysis of the causal relationships of occupational injuries. The task of reducing the possible probability of injury and its consequences has a multi-factor structure, since it requires the restoration of the circumstances of the situation, their analysis and lessons learned, and the procedure for predicting industrial injuries depends on the type of mathematical model chosen and the quality of the initial data to be further analyzed. The paper analyzes sequential, complex linear and non-linear models and methods for assessing the cause-and-effect relationships of accidents, identifies key provisions and results. Based on the analysis of the scope, advantages and disadvantages, recommendations for the implementation of methods of predictive analysis of injuries in Russia are formed.","PeriodicalId":272476,"journal":{"name":"2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117193165","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}
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