Pub Date : 2015-11-01DOI: 10.1109/IECON.2015.7392755
A. Abduallah, A. Iqbal, M. Meraj, L. Ben‐Brahim, R. Alammari, H. Abu-Rub
In this paper, discontinuous space vector pulse width modulation for a five-phase quasi Z-source inverter is presented. Two schemes are introduced for the continuous SVM of five-phase qZSI (SVQ1 & SVQ2) and two schemes of discontinuous SVM (DSVQ1 & DSVQ2) are proposed SVQ1 method is based on subtracting the shoot-through state interval from the zero state interval only. While SVQ2 subtract the shoot-through state interval from all active and zero states intervals. The discontinuous SVQ schemes are based on eliminating one of the zero vectors which will lead to 20% reduction in number of switchings. These schemes are simulated using Matlab/Simulink. An experimental setup is developed to validate and test the proposed schemes.
{"title":"Discontinuous space vector pulse width modulation techniques for a five-phase quasi Z-source inverter","authors":"A. Abduallah, A. Iqbal, M. Meraj, L. Ben‐Brahim, R. Alammari, H. Abu-Rub","doi":"10.1109/IECON.2015.7392755","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392755","url":null,"abstract":"In this paper, discontinuous space vector pulse width modulation for a five-phase quasi Z-source inverter is presented. Two schemes are introduced for the continuous SVM of five-phase qZSI (SVQ1 & SVQ2) and two schemes of discontinuous SVM (DSVQ1 & DSVQ2) are proposed SVQ1 method is based on subtracting the shoot-through state interval from the zero state interval only. While SVQ2 subtract the shoot-through state interval from all active and zero states intervals. The discontinuous SVQ schemes are based on eliminating one of the zero vectors which will lead to 20% reduction in number of switchings. These schemes are simulated using Matlab/Simulink. An experimental setup is developed to validate and test the proposed schemes.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134432102","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392372
L. Dunai, Andrés Prieto, M. Chillarón, J. Antonino-Daviu
The promotion of the students' transversal or generic competencies is one of the key points of the new European educational framework. Today, companies hiring graduate students are not only concerned about their technical background but also transversal skills and competencies. Hence, it becomes necessary to adopt measures to promote and cultivate these competencies among students. The students' involvement in innovative research projects brings an excellent opportunity to achieve this goal: competence dimensions as team work, effective oral and written communication, effective use of informational resources, independent learning, foreign language, problem resolution among many other can be effectively developed by involving students in multidisciplinary teams conceived to develop this type of projects. This paper focuses on this idea, remarking the usefulness of these projects to achieve the goals pursues by the new educational framework in the context of generic competencies. A real success story at the Universitat Politecnica de Valencia, based on a project relying on the development of an intelligent hardware system (SEE4ME) is presented. It confirms the ability of this approach to promote generic skills and competencies among students.
{"title":"Education in electric and electronic engineering via students involvement in innovative projects","authors":"L. Dunai, Andrés Prieto, M. Chillarón, J. Antonino-Daviu","doi":"10.1109/IECON.2015.7392372","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392372","url":null,"abstract":"The promotion of the students' transversal or generic competencies is one of the key points of the new European educational framework. Today, companies hiring graduate students are not only concerned about their technical background but also transversal skills and competencies. Hence, it becomes necessary to adopt measures to promote and cultivate these competencies among students. The students' involvement in innovative research projects brings an excellent opportunity to achieve this goal: competence dimensions as team work, effective oral and written communication, effective use of informational resources, independent learning, foreign language, problem resolution among many other can be effectively developed by involving students in multidisciplinary teams conceived to develop this type of projects. This paper focuses on this idea, remarking the usefulness of these projects to achieve the goals pursues by the new educational framework in the context of generic competencies. A real success story at the Universitat Politecnica de Valencia, based on a project relying on the development of an intelligent hardware system (SEE4ME) is presented. It confirms the ability of this approach to promote generic skills and competencies among students.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131573340","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392148
Xuemei Zheng, D. Ding, Rui Song, Yong Feng
This paper proposes an adaptive full-order Sliding Mode Observer (SMO) for the rotor speed and position estimation in the Permanent Magnet Synchronous Generator (PMSG). A full-order terminal SMO is designed to make the estimated stator current track the actual stator current, and eliminate the chattering. Furthermore, A back Electro Motive Force (EMF) observer adopts adaptive control to estimate the back EMF. Thus the rotor speed can be estimated from the adaptive law, and the rotor position can be calculated by the back EMF. The design of the adaptive back EMF observer further reduced the chattering. Compared simulation results are presented to validate the proposed method.
{"title":"Research of adaptive full-order Sliding Mode Observer in Permanent Magnet Synchronous Generator","authors":"Xuemei Zheng, D. Ding, Rui Song, Yong Feng","doi":"10.1109/IECON.2015.7392148","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392148","url":null,"abstract":"This paper proposes an adaptive full-order Sliding Mode Observer (SMO) for the rotor speed and position estimation in the Permanent Magnet Synchronous Generator (PMSG). A full-order terminal SMO is designed to make the estimated stator current track the actual stator current, and eliminate the chattering. Furthermore, A back Electro Motive Force (EMF) observer adopts adaptive control to estimate the back EMF. Thus the rotor speed can be estimated from the adaptive law, and the rotor position can be calculated by the back EMF. The design of the adaptive back EMF observer further reduced the chattering. Compared simulation results are presented to validate the proposed method.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132966297","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392494
Shuehi Kurashima, Satoshi Suzuki
Activity recognition is possible to be used to understand behavior of infants and effective for health and development of children. In our previous study, action of children were assumed as sleeping, sitting, hand motion, walking, running, and playing. Revise of action items were, however, required because it was difficult to calculate calorie consumption in the previous. In this study, 11 action items are newly assumed, and accuracies of the activity recognition were investigated. As a result, accuracies of 4 items among 11 items were improved over than 60%, although accuracies of other 7 items were less than 60%.
{"title":"Improvement of activity recognition for child growth monitoring system at kindergarten","authors":"Shuehi Kurashima, Satoshi Suzuki","doi":"10.1109/IECON.2015.7392494","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392494","url":null,"abstract":"Activity recognition is possible to be used to understand behavior of infants and effective for health and development of children. In our previous study, action of children were assumed as sleeping, sitting, hand motion, walking, running, and playing. Revise of action items were, however, required because it was difficult to calculate calorie consumption in the previous. In this study, 11 action items are newly assumed, and accuracies of the activity recognition were investigated. As a result, accuracies of 4 items among 11 items were improved over than 60%, although accuracies of other 7 items were less than 60%.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132640524","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392087
A. Elserougi, A. Abdel-Khalik, A. Massoud, Shehab Ahmed
Dual three-phase (asymmetrical six-phase) induction motors have received significant attention in high power medium voltage drive applications. Typically, two three-phase voltage source converters are needed to feed such a drive system. In medium voltage applications, multilevel inverters are preferred as they provide a stepped output voltage waveform that reduces dv/dt stresses and provides a better output current waveform, which reflects positively on the machine developed torque and overall drive performance. Among different multilevel inverters, the Modular Multilevel Converter (MMC) has recently shown promise in medium and high voltage applications. For a dual three-phase machine, two MMCs with 6 arms each, are needed. This paper proposes a nine-arm MMC (9A-MMC) to drive such a motor. The proposed approach reduces the number of involved arms by 25%, i.e. reduces the number of required dc capacitors, semiconductor devices and their gate drive circuits, which reduces system complexity and cost. A complete analysis of the proposed system is presented and a simulation model is used to verify the proposed concept.
{"title":"A nine-arm modular multilevel converter (9A-MMC) for six-phase medium voltage motor drives","authors":"A. Elserougi, A. Abdel-Khalik, A. Massoud, Shehab Ahmed","doi":"10.1109/IECON.2015.7392087","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392087","url":null,"abstract":"Dual three-phase (asymmetrical six-phase) induction motors have received significant attention in high power medium voltage drive applications. Typically, two three-phase voltage source converters are needed to feed such a drive system. In medium voltage applications, multilevel inverters are preferred as they provide a stepped output voltage waveform that reduces dv/dt stresses and provides a better output current waveform, which reflects positively on the machine developed torque and overall drive performance. Among different multilevel inverters, the Modular Multilevel Converter (MMC) has recently shown promise in medium and high voltage applications. For a dual three-phase machine, two MMCs with 6 arms each, are needed. This paper proposes a nine-arm MMC (9A-MMC) to drive such a motor. The proposed approach reduces the number of involved arms by 25%, i.e. reduces the number of required dc capacitors, semiconductor devices and their gate drive circuits, which reduces system complexity and cost. A complete analysis of the proposed system is presented and a simulation model is used to verify the proposed concept.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130754130","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392915
H. Goto, S. Murakami, O. Ichinokura
Switched Reluctance Motor (SRM) attracts attention as motor that use no rare earth materials. And it is a candidate technology for electric vehicle application. In addition, Axial-Flux structure has possibility of effective utilization of In-Wheel flat motor space. However, it is not established how to decide optimum design of Axial-Flux SRM (AFSRM). This paper mainly discusses the reduction in size and weight of AFSRM. First, the optimum ratio of SRM's diameter and axial length (diameter/axial length) for increase torque-volume density is examined using FEA. So, the optimum stator pole length regarding to the diameter for maximum torque-volume density is found. After that, a double stator AFSRM is designed for EV.
{"title":"Design to maximize torque-volume density of axial-flux SRM for in-wheel EV","authors":"H. Goto, S. Murakami, O. Ichinokura","doi":"10.1109/IECON.2015.7392915","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392915","url":null,"abstract":"Switched Reluctance Motor (SRM) attracts attention as motor that use no rare earth materials. And it is a candidate technology for electric vehicle application. In addition, Axial-Flux structure has possibility of effective utilization of In-Wheel flat motor space. However, it is not established how to decide optimum design of Axial-Flux SRM (AFSRM). This paper mainly discusses the reduction in size and weight of AFSRM. First, the optimum ratio of SRM's diameter and axial length (diameter/axial length) for increase torque-volume density is examined using FEA. So, the optimum stator pole length regarding to the diameter for maximum torque-volume density is found. After that, a double stator AFSRM is designed for EV.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131169697","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392193
K. Abe, K. Ohishi, H. Haga
This paper proposes a current harmonics control method for the input current of an electrolytic capacitor-less inverter for an interior permanent magnet synchronous motor (IPMSM). In general, an IPMSM has large spatial harmonics caused by the rotor structure. The back electromotive force (EMF) of an IPMSM contains harmonics and generates three-phase current harmonics. The three-phase current harmonics result in the input current harmonics of an electrolytic capacitor-less inverter because the power converter system has little energy storage on the DC-link. This paper analyzes an input current harmonics generation mechanism based on averaged DC-link current. The proposed control method that controls the input current harmonics is based on the analysis mechanism. The validity of the proposed method is confirmed through simulation and experimental results.
{"title":"Fine current harmonics suppression control for the input current of electrolytic capacitor-less inverter for IPMSM","authors":"K. Abe, K. Ohishi, H. Haga","doi":"10.1109/IECON.2015.7392193","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392193","url":null,"abstract":"This paper proposes a current harmonics control method for the input current of an electrolytic capacitor-less inverter for an interior permanent magnet synchronous motor (IPMSM). In general, an IPMSM has large spatial harmonics caused by the rotor structure. The back electromotive force (EMF) of an IPMSM contains harmonics and generates three-phase current harmonics. The three-phase current harmonics result in the input current harmonics of an electrolytic capacitor-less inverter because the power converter system has little energy storage on the DC-link. This paper analyzes an input current harmonics generation mechanism based on averaged DC-link current. The proposed control method that controls the input current harmonics is based on the analysis mechanism. The validity of the proposed method is confirmed through simulation and experimental results.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132886733","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392067
O. Abdel-Rahim, H. Funato, J. Haruna
Pseudo single stage flyback current source inverter designed for photovoltaic applications is presented in this paper. The proposed inverter consists of flyback current source converter and h-bridge unfolding stage. The proposed system is intended to do the following functions: extract maximum power for the Photovoltaic (PV) module, inject a sinusoidal current into the grid. Flyback converter is designed to operate in Discontinuous Conduction Mode (DCM), the purpose of DCM operation is to inject a sinusoidal current into the grid without measuring the grid current. Rectified sinusoidal modulation is used to control the flyback converter switch. The purpose of this modulation strategy is to let the output of the flyback converter current to be a rectified sinusoidal waveform. H-bridge unfolding stage is used to convert the rectified current at the fundamental frequency of the grid voltage to full sinusoidal current. All switches of the h-bridge unfolding circuits are operating at fundamental frequency of the grid. Operating at fundamental frequency reduces the switching losses of the h-bridge inverter to be approximately zero.
{"title":"Pseudo single stage flyback current source inverter for grid connected PV applications","authors":"O. Abdel-Rahim, H. Funato, J. Haruna","doi":"10.1109/IECON.2015.7392067","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392067","url":null,"abstract":"Pseudo single stage flyback current source inverter designed for photovoltaic applications is presented in this paper. The proposed inverter consists of flyback current source converter and h-bridge unfolding stage. The proposed system is intended to do the following functions: extract maximum power for the Photovoltaic (PV) module, inject a sinusoidal current into the grid. Flyback converter is designed to operate in Discontinuous Conduction Mode (DCM), the purpose of DCM operation is to inject a sinusoidal current into the grid without measuring the grid current. Rectified sinusoidal modulation is used to control the flyback converter switch. The purpose of this modulation strategy is to let the output of the flyback converter current to be a rectified sinusoidal waveform. H-bridge unfolding stage is used to convert the rectified current at the fundamental frequency of the grid voltage to full sinusoidal current. All switches of the h-bridge unfolding circuits are operating at fundamental frequency of the grid. Operating at fundamental frequency reduces the switching losses of the h-bridge inverter to be approximately zero.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133594132","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392371
M. Becke, T. Schlegl
In this paper, a new method for a minimum-error pose estimation of cylinder axes based on apparent contour line features from multiple views is presented. Novel model equations for both single and particularly multiple views are derived, and based upon these, an iterative algorithm for least squares fitting the model to imaged cylinder contour line features is introduced. The good performance and fast convergence of the proposed algorithm is shown by solving exemplary fitting problems.
{"title":"Least squares pose estimation of cylinder axes from multiple views using contour line features","authors":"M. Becke, T. Schlegl","doi":"10.1109/IECON.2015.7392371","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392371","url":null,"abstract":"In this paper, a new method for a minimum-error pose estimation of cylinder axes based on apparent contour line features from multiple views is presented. Novel model equations for both single and particularly multiple views are derived, and based upon these, an iterative algorithm for least squares fitting the model to imaged cylinder contour line features is introduced. The good performance and fast convergence of the proposed algorithm is shown by solving exemplary fitting problems.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133681456","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 : 2015-11-01DOI: 10.1109/IECON.2015.7392134
Taro Sugihara, H. Sakanishi, A. Gofuku, K. Umemoto, Muneou Suzuki, K. Araki
We discuss the influences of electronic clinical pathways (ECPs) as a knowledge management system in a university hospital. We conducted a preliminary study wherein we analyzed records from the use of ECPs and interviewed eight nurses in charge of creating ECPs in their respective departments. We then conducted follow-up interviews with a chief nurse, another nurse, and four technical staffs. We found that constructing ECPs involves creating knowledge to enhance the skills and knowledge of nurse apprentices. In addition, ECPs function as tools for knowledge creation in teams that frequently generate and use them. Nurses can use ECPs to facilitate knowledge transfer from senior colleagues to apprentices through the processes of constructing and operating the ECP.
{"title":"Potential of electronic clinical pathways as triggers for eliciting implicit knowledge","authors":"Taro Sugihara, H. Sakanishi, A. Gofuku, K. Umemoto, Muneou Suzuki, K. Araki","doi":"10.1109/IECON.2015.7392134","DOIUrl":"https://doi.org/10.1109/IECON.2015.7392134","url":null,"abstract":"We discuss the influences of electronic clinical pathways (ECPs) as a knowledge management system in a university hospital. We conducted a preliminary study wherein we analyzed records from the use of ECPs and interviewed eight nurses in charge of creating ECPs in their respective departments. We then conducted follow-up interviews with a chief nurse, another nurse, and four technical staffs. We found that constructing ECPs involves creating knowledge to enhance the skills and knowledge of nurse apprentices. In addition, ECPs function as tools for knowledge creation in teams that frequently generate and use them. Nurses can use ECPs to facilitate knowledge transfer from senior colleagues to apprentices through the processes of constructing and operating the ECP.","PeriodicalId":190550,"journal":{"name":"IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133197358","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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