Pub Date : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00145
Jin Xiao, Q. Z., Bin Z., X. F.
A solid-state bonding method based on Cu-Ni secondary sea cucumber micro nano layer is proposed. The surfaces of the two substrates with a sea cucumber Cu-Ni micro nano layer are contacted with each other to form a contact area, and then pressure is applied to the contact area under heating conditions to bond. The sea cucumber Cu-Ni micro nano layer includes a copper needle layer and a nickel needle layer plated on the surface of the copper needle layer. The copper needle layer is an array layer formed by a tapered copper microneedle, and the nickel needle layer includes an array layer formed by a tapered nickel nanoneedle and a protuberance. The microstructure, bonding mechanism and shear strength of the interface were analyzed by scanning electron microscope, transmission electron microscope and welding strength testing instrument. The results show that this solid state bonding method can obtain high strength interconnection force.
{"title":"Solid State Bonding Method Based on Cu -Ni Secondary Sea Cucumber Micro-nano Layer","authors":"Jin Xiao, Q. Z., Bin Z., X. F.","doi":"10.1109/ICEDME50972.2020.00145","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00145","url":null,"abstract":"A solid-state bonding method based on Cu-Ni secondary sea cucumber micro nano layer is proposed. The surfaces of the two substrates with a sea cucumber Cu-Ni micro nano layer are contacted with each other to form a contact area, and then pressure is applied to the contact area under heating conditions to bond. The sea cucumber Cu-Ni micro nano layer includes a copper needle layer and a nickel needle layer plated on the surface of the copper needle layer. The copper needle layer is an array layer formed by a tapered copper microneedle, and the nickel needle layer includes an array layer formed by a tapered nickel nanoneedle and a protuberance. The microstructure, bonding mechanism and shear strength of the interface were analyzed by scanning electron microscope, transmission electron microscope and welding strength testing instrument. The results show that this solid state bonding method can obtain high strength interconnection force.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124414193","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00090
Yajuan Chen
Based on the basic theory of thermodynamics and finite element, taking PCB of as the research object of a vehicle controller, the thermal characteristics and structural mechanics simulation are carried out. The distribution of temperature, thermal stress and deformation and thermal-force coupling performance of PCB are obtained, so as to provide a reference for the design optimization of the subsequent circuit board, the selection of heat dissipation mode and the installation position.
{"title":"Analysis and Research on Thermal-Force Coupling Performance of a Vehicle Controller PCB Board","authors":"Yajuan Chen","doi":"10.1109/ICEDME50972.2020.00090","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00090","url":null,"abstract":"Based on the basic theory of thermodynamics and finite element, taking PCB of as the research object of a vehicle controller, the thermal characteristics and structural mechanics simulation are carried out. The distribution of temperature, thermal stress and deformation and thermal-force coupling performance of PCB are obtained, so as to provide a reference for the design optimization of the subsequent circuit board, the selection of heat dissipation mode and the installation position.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122539735","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00144
Zongwei Liu, Baolei Zhang, F. Zhao
The connotation of automotive industry digitization was elucidated systematically based on the tide of intelligent upgrading of automotive industry. The deep impact of Automotive Industry APP (AIAPP) on automotive industry was introduced with a digitization prospect after the analysis of definition and effects of Industry APP (IAPP). Main types of AIAPP were expounded with detail aiming at the application areas of AIAPP. Development elements of AIAPP were analyzed in detail from the point of digital upgrading of automotive industry. Major difficulties of developing AIAPP were summarized by dissecting process characteristic of the development and application of AIAPP. The main strategies were proposed on carrying forward the development of AIAPP from the aspects of division and cooperation of participants, labor division between OEMs and auto parts companies, collaboration between automotive technicians and software technicians, and nurture of an industrial ecosystem.
{"title":"Automotive Industry APP Development Strategy in the Prospect of Digitalization","authors":"Zongwei Liu, Baolei Zhang, F. Zhao","doi":"10.1109/ICEDME50972.2020.00144","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00144","url":null,"abstract":"The connotation of automotive industry digitization was elucidated systematically based on the tide of intelligent upgrading of automotive industry. The deep impact of Automotive Industry APP (AIAPP) on automotive industry was introduced with a digitization prospect after the analysis of definition and effects of Industry APP (IAPP). Main types of AIAPP were expounded with detail aiming at the application areas of AIAPP. Development elements of AIAPP were analyzed in detail from the point of digital upgrading of automotive industry. Major difficulties of developing AIAPP were summarized by dissecting process characteristic of the development and application of AIAPP. The main strategies were proposed on carrying forward the development of AIAPP from the aspects of division and cooperation of participants, labor division between OEMs and auto parts companies, collaboration between automotive technicians and software technicians, and nurture of an industrial ecosystem.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122805101","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00134
Shen Wenqiang, J. Ying, Li Dongming, Lv Shuai
This This paper designs a concave longitudinal vibration sandwich type piezoelectric transducer for suspension support of squeeze film. The transducer has hyperbolic deformable horn, which can efficiently gather energy and obtain greater energy conversion efficiency. Finite element simulation is used to predict longitudinal vibration mode, output amplitude and electrical parameters of the transducer at resonance frequency, and electromechanical coupling coefficient of the transducer can be calculated. Transducer is tested based on the above simulation analysis and theoretical calculation results. Results show that the transducer meets design requirements and its electromechanical coupling coefficient is 40.1%, which verifies rationality of structural design of the transducer and provides theoretical basis for improving energy conversion efficiency of piezoelectric transducer.
{"title":"Design and experimental study of concave longitudinal vibration piezoelectric ultrasonic transducer","authors":"Shen Wenqiang, J. Ying, Li Dongming, Lv Shuai","doi":"10.1109/ICEDME50972.2020.00134","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00134","url":null,"abstract":"This This paper designs a concave longitudinal vibration sandwich type piezoelectric transducer for suspension support of squeeze film. The transducer has hyperbolic deformable horn, which can efficiently gather energy and obtain greater energy conversion efficiency. Finite element simulation is used to predict longitudinal vibration mode, output amplitude and electrical parameters of the transducer at resonance frequency, and electromechanical coupling coefficient of the transducer can be calculated. Transducer is tested based on the above simulation analysis and theoretical calculation results. Results show that the transducer meets design requirements and its electromechanical coupling coefficient is 40.1%, which verifies rationality of structural design of the transducer and provides theoretical basis for improving energy conversion efficiency of piezoelectric transducer.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115722443","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00025
H. B. Zhang, G. Shi, H. Sun, Z. J. Yu, Y. Wang
Active Electronically Scanned Array (AESA) radar has all-weather and all-day capability of earth observation. And all countries attach great importance to the development of AESA radar. The antenna is the main component of AESA radar, and it even can weigh 85 percent of a satellite, so its rigidity has more and more obvious influence on the whole satellite during the launching process. With the increasing of the weight of the antenna, the contradiction between its weight and rigidity becomes more prominent. In this paper, in order to optimize the rigidity of the antenna, finite element software was used and a detailed finite element model of AESA antenna was established. Then several structural factors of antenna, like the fixed position, the height of the main beam etc., were analysed respectively. The relatively important factors were selected, and the Taguchi method was used to establish L16(45) orthogonal analysis table using those factors. Finally, the significance of these important structure factors affecting AESA antennas and their optimal combination were obtained.
{"title":"Active Electronically Scanned Array Antenna Design Optimization Based on Taguchi Method","authors":"H. B. Zhang, G. Shi, H. Sun, Z. J. Yu, Y. Wang","doi":"10.1109/ICEDME50972.2020.00025","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00025","url":null,"abstract":"Active Electronically Scanned Array (AESA) radar has all-weather and all-day capability of earth observation. And all countries attach great importance to the development of AESA radar. The antenna is the main component of AESA radar, and it even can weigh 85 percent of a satellite, so its rigidity has more and more obvious influence on the whole satellite during the launching process. With the increasing of the weight of the antenna, the contradiction between its weight and rigidity becomes more prominent. In this paper, in order to optimize the rigidity of the antenna, finite element software was used and a detailed finite element model of AESA antenna was established. Then several structural factors of antenna, like the fixed position, the height of the main beam etc., were analysed respectively. The relatively important factors were selected, and the Taguchi method was used to establish L16(45) orthogonal analysis table using those factors. Finally, the significance of these important structure factors affecting AESA antennas and their optimal combination were obtained.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132000512","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00067
Yuxi Bai, Yong Chen
continuous development of the plastics industry, there are more and more kinds of plastic welding process, but compared to other plastic welding processes, ultrasonic plastic welding is currently the most commonly used plastic welding technology, and compared to traditional ultrasonic plastic welding equipment, this paper uses a six-axis robot to design an ultrasonic plastic flexible welding equipment using a car steering wheel as a welding sample. The article is carried out from the selection of welding materials, welding process selection, equipment hardware composition and software control. Compared with the traditional ultrasonic welding equipment for mass production of a single part, the ultrasonic plastic flexible welding equipment designed in this paper is mainly applicable to the processing of multiple varieties and small batch parts.
{"title":"Research on ultrasonic plastic flexible welding equipment for automobile steering wheel","authors":"Yuxi Bai, Yong Chen","doi":"10.1109/ICEDME50972.2020.00067","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00067","url":null,"abstract":"continuous development of the plastics industry, there are more and more kinds of plastic welding process, but compared to other plastic welding processes, ultrasonic plastic welding is currently the most commonly used plastic welding technology, and compared to traditional ultrasonic plastic welding equipment, this paper uses a six-axis robot to design an ultrasonic plastic flexible welding equipment using a car steering wheel as a welding sample. The article is carried out from the selection of welding materials, welding process selection, equipment hardware composition and software control. Compared with the traditional ultrasonic welding equipment for mass production of a single part, the ultrasonic plastic flexible welding equipment designed in this paper is mainly applicable to the processing of multiple varieties and small batch parts.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127535451","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00014
Zhang Xuechao, C. Hao, Cheng Lu, Yun Feng, Lv Lei
Atmospheric corrosion, soil corrosion and stress corrosion are important factors that lead to the failure of metal equipment in power grid. Adverse meteorological conditions and the presence of atmospheric pollutants will accelerate atmospheric corrosion, especially the corrosion of sulfur, chlorine, nitrogen compounds and salts to metal equipment; the corrosion of soil to metal components is mainly the function of electrolyte, while under the action of stress, the tower, conductor and hardware in the stressed state will produce stress corrosion when they interact with atmosphere. The comprehensive use of hot-dip galvanizing, new materials, new anti-corrosion coating and other technologies can effectively improve its anti-corrosion ability.
{"title":"Corrosion and Protection of Metal Equipment in West Inner Mongolian Power Grid","authors":"Zhang Xuechao, C. Hao, Cheng Lu, Yun Feng, Lv Lei","doi":"10.1109/ICEDME50972.2020.00014","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00014","url":null,"abstract":"Atmospheric corrosion, soil corrosion and stress corrosion are important factors that lead to the failure of metal equipment in power grid. Adverse meteorological conditions and the presence of atmospheric pollutants will accelerate atmospheric corrosion, especially the corrosion of sulfur, chlorine, nitrogen compounds and salts to metal equipment; the corrosion of soil to metal components is mainly the function of electrolyte, while under the action of stress, the tower, conductor and hardware in the stressed state will produce stress corrosion when they interact with atmosphere. The comprehensive use of hot-dip galvanizing, new materials, new anti-corrosion coating and other technologies can effectively improve its anti-corrosion ability.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125597918","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00142
Penghui Niu, Yu Tang, Zhen Wang, Yitian Zhu
Accurate forecast of air material demand can not only improve the refinement degree of air material support, but also increase the predictability of air material support, and lay the foundation for completing various flight missions. This paper makes full use of the self-adaptive, self-organizing and self-learning ability of the artificial neural network, and puts forward a combined forecasting model based on LVQ neural network, Elman neural network and SOM neural network. Using entropy theory, the weight coefficients of each forecast method are determined. The example proves that the method has good effect.
{"title":"Air Material Demand Forecast Based on Combined Neural Network","authors":"Penghui Niu, Yu Tang, Zhen Wang, Yitian Zhu","doi":"10.1109/ICEDME50972.2020.00142","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00142","url":null,"abstract":"Accurate forecast of air material demand can not only improve the refinement degree of air material support, but also increase the predictability of air material support, and lay the foundation for completing various flight missions. This paper makes full use of the self-adaptive, self-organizing and self-learning ability of the artificial neural network, and puts forward a combined forecasting model based on LVQ neural network, Elman neural network and SOM neural network. Using entropy theory, the weight coefficients of each forecast method are determined. The example proves that the method has good effect.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114319631","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00114
Zhipeng Sun, Jian Qu, Bo Wang, J. Qin
The objective of this work mainly focuses on the surface friction coefficient of the polypropylene based building template pellicle. Herein, PP blends filled with lubricants (ER, OR and EBS) were prepared by melting mixing. The influence of lubricants mass fraction of the blends on the scratch resistance, precipitation migration of auxiliaries, mechanical properties, MFR were investigated. The scratch resistance analysis showed that the △L value of PP/ER and PP/OR decreased to the lowest when the mass fraction of ER or OR reached 20wt%. This finding indicates that the addition of ER or OR can effectively improve the scratch performance of the PP blends. The xenon lamp exposure results showed that the ER or OR can quickly migrate to the surface of the PP blends. It indicates that the addition of ER or OR can effectively reduce the surface friction coefficient of PP blends. Moreover, the mechanical properties were found to decrease with the increase in lubricants mass fraction due to the lower adhesion between the lubricant and the PP phase.
{"title":"Preparation and performance of polypropylene based building template pellicle","authors":"Zhipeng Sun, Jian Qu, Bo Wang, J. Qin","doi":"10.1109/ICEDME50972.2020.00114","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00114","url":null,"abstract":"The objective of this work mainly focuses on the surface friction coefficient of the polypropylene based building template pellicle. Herein, PP blends filled with lubricants (ER, OR and EBS) were prepared by melting mixing. The influence of lubricants mass fraction of the blends on the scratch resistance, precipitation migration of auxiliaries, mechanical properties, MFR were investigated. The scratch resistance analysis showed that the △L value of PP/ER and PP/OR decreased to the lowest when the mass fraction of ER or OR reached 20wt%. This finding indicates that the addition of ER or OR can effectively improve the scratch performance of the PP blends. The xenon lamp exposure results showed that the ER or OR can quickly migrate to the surface of the PP blends. It indicates that the addition of ER or OR can effectively reduce the surface friction coefficient of PP blends. Moreover, the mechanical properties were found to decrease with the increase in lubricants mass fraction due to the lower adhesion between the lubricant and the PP phase.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114563564","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 : 2020-05-01DOI: 10.1109/ICEDME50972.2020.00023
Liu Zhiwei, Dong Litong, Guo Zhihong, C. Yinghua, Qi Huiwen, Ge Yanqin
It is an urgent issue to reflect the utilization efficiency of regional distribution network equipment assets effectively. First of all, this paper establishes an evaluation index system of the utilization efficiency of equipment assets of distribution network with 16 evaluation indexes from four dimensions of policy conditions, economic conditions, load characteristics of equipment assets and grid structure based on the analysis of the development of regional distribution network and the utilization of equipment assets; secondly, with the help of the order relation- improved entropy weight method, each evaluation index is weighted, and the evaluation model of utilization efficiency of distribution network equipment assets is established; finally, the utilization efficiency of equipment assets in a distribution network in a certain region in north China is selected for evaluation, which provides reference value for the utilization of equipment assets and the improvement of grid economy in similar regions.
{"title":"Evaluation Model of Utilization Efficiency of Equipment Assets in Power Distribution Network Based on Order Relation-improved Entropy Weight Method","authors":"Liu Zhiwei, Dong Litong, Guo Zhihong, C. Yinghua, Qi Huiwen, Ge Yanqin","doi":"10.1109/ICEDME50972.2020.00023","DOIUrl":"https://doi.org/10.1109/ICEDME50972.2020.00023","url":null,"abstract":"It is an urgent issue to reflect the utilization efficiency of regional distribution network equipment assets effectively. First of all, this paper establishes an evaluation index system of the utilization efficiency of equipment assets of distribution network with 16 evaluation indexes from four dimensions of policy conditions, economic conditions, load characteristics of equipment assets and grid structure based on the analysis of the development of regional distribution network and the utilization of equipment assets; secondly, with the help of the order relation- improved entropy weight method, each evaluation index is weighted, and the evaluation model of utilization efficiency of distribution network equipment assets is established; finally, the utilization efficiency of equipment assets in a distribution network in a certain region in north China is selected for evaluation, which provides reference value for the utilization of equipment assets and the improvement of grid economy in similar regions.","PeriodicalId":155375,"journal":{"name":"2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114690834","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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