Pub Date : 2017-06-01DOI: 10.1109/ICIEA.2017.8282813
Xingchen Xu, Chuanlin Zhang
In this paper, a finite-time robust speed tracking control law via output feedback is proposed for a single-shaft micro-turbine (MT) as a distributed energy resource. As a main contribution, a novel non-recursive design manner is employed in this paper to render a finite-time exact speed tracking result with tunable robust margin for the MT system. This approach will avoid heavy calculations of recursive partial differential terms which are inevitable by backstepping based methods and therefore, the controller now can be expressed as a very simple form. In addition, a sensor-less control strategy will clearly lead to a reliability improvement and an implementation cost reduction of the control system. Both theoretic analysis and numerical simulation results are presented to demonstrate the speed tracking performance of the proposed controller.
{"title":"Realization of finite-time robust speed tracking control for a micro-turbine as a distributed energy resource","authors":"Xingchen Xu, Chuanlin Zhang","doi":"10.1109/ICIEA.2017.8282813","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8282813","url":null,"abstract":"In this paper, a finite-time robust speed tracking control law via output feedback is proposed for a single-shaft micro-turbine (MT) as a distributed energy resource. As a main contribution, a novel non-recursive design manner is employed in this paper to render a finite-time exact speed tracking result with tunable robust margin for the MT system. This approach will avoid heavy calculations of recursive partial differential terms which are inevitable by backstepping based methods and therefore, the controller now can be expressed as a very simple form. In addition, a sensor-less control strategy will clearly lead to a reliability improvement and an implementation cost reduction of the control system. Both theoretic analysis and numerical simulation results are presented to demonstrate the speed tracking performance of the proposed controller.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134106359","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 : 2017-06-01DOI: 10.1109/ICIEA.2017.8282994
Xiao Qijun, Huang Wei, Luo Zhonghui, L. Yanghua, Du Canyi
The marine sediment acoustic velocity is an important physical parameter for Marine Physics and Underwater acoustics research. Based on the specific time-frequency localization characteristic of wavelet transform, this paper introduces the detection principle of signal singularity for wavelet transform, the calculation of singularity value, and the determination method of the singular point. Furthermore, a novel starting point detection of acoustic echo wave for marine sediment velocity measurement is proposed using singular point detection theory of wavelet transform. Feasibility of this approach is verified by two experiments. It is shown that this method can improve the accuracy of acoustic velocity measurement, and this method supplies technical support for developing submarine automatic measurement equipment.
{"title":"Wavelet transform singularity detection technology applied in the seabed sediment sound velocity measurement","authors":"Xiao Qijun, Huang Wei, Luo Zhonghui, L. Yanghua, Du Canyi","doi":"10.1109/ICIEA.2017.8282994","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8282994","url":null,"abstract":"The marine sediment acoustic velocity is an important physical parameter for Marine Physics and Underwater acoustics research. Based on the specific time-frequency localization characteristic of wavelet transform, this paper introduces the detection principle of signal singularity for wavelet transform, the calculation of singularity value, and the determination method of the singular point. Furthermore, a novel starting point detection of acoustic echo wave for marine sediment velocity measurement is proposed using singular point detection theory of wavelet transform. Feasibility of this approach is verified by two experiments. It is shown that this method can improve the accuracy of acoustic velocity measurement, and this method supplies technical support for developing submarine automatic measurement equipment.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131792886","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 : 2017-06-01DOI: 10.1109/ICIEA.2017.8283085
Lantao Xing, C. Wen, Zhitao Liu, H. Su, Jianping Cai
In this paper, to reduce the communication burden between the controller and the actuator, we propose an event-triggered control design scheme for the spacecraft attitude stabilization problem. The main idea is that we design the controller and the triggering event simultaneously such that the controller can effectively compensate for the measurement errors caused by the event-triggering mechanism. Two different kinds of triggering events, i.e. the fixed threshold strategy and the relative threshold strategy, are considered according to practical situations. Through Lyapunov analysis, it is shown that the proposed event-trigger control schemes guarantee that the spacecraft attitude tracking error and the angular velocity error will exponentially converge towards an adjustable set around zero.
{"title":"An event-triggered design scheme for spacecraft attitude control","authors":"Lantao Xing, C. Wen, Zhitao Liu, H. Su, Jianping Cai","doi":"10.1109/ICIEA.2017.8283085","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8283085","url":null,"abstract":"In this paper, to reduce the communication burden between the controller and the actuator, we propose an event-triggered control design scheme for the spacecraft attitude stabilization problem. The main idea is that we design the controller and the triggering event simultaneously such that the controller can effectively compensate for the measurement errors caused by the event-triggering mechanism. Two different kinds of triggering events, i.e. the fixed threshold strategy and the relative threshold strategy, are considered according to practical situations. Through Lyapunov analysis, it is shown that the proposed event-trigger control schemes guarantee that the spacecraft attitude tracking error and the angular velocity error will exponentially converge towards an adjustable set around zero.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131855208","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 : 2017-06-01DOI: 10.1109/ICIEA.2017.8283146
Zulkarnain Zainudin, M. M. Ibrahim, S. Kodagoda
Generally, a model on describing human motion patterns should have an ability to enhance tracking performance particularly when dealing with long term occlusions. These patterns can be efficiently learned by applying Gaussian Processes (GPs). However, the GPs can become computationally expensive with increasing training data with time. Thus, with the proposed data selection and management using Mutual Information (MI) and Mahalanobis Distance (MD)approach, we have be able to keep the necessary portion of informative data and discard the others. This approach is then experimented by using the measurements of horizontal 2D scan of public area of our research centre with a stationary laser range finder. Experimental results show that even 90% reduction of data did not contribute to significantly increased Root Mean Square Error (RMSE). Implementation of Gaussian Process — Particle filter tracker for people tracking with long term occlusions produces a remarkable tracking performance when compared to Extended Kalman Filter (EKF) tracker.
{"title":"Non-parametric data optimization for 2D laser based people tracking","authors":"Zulkarnain Zainudin, M. M. Ibrahim, S. Kodagoda","doi":"10.1109/ICIEA.2017.8283146","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8283146","url":null,"abstract":"Generally, a model on describing human motion patterns should have an ability to enhance tracking performance particularly when dealing with long term occlusions. These patterns can be efficiently learned by applying Gaussian Processes (GPs). However, the GPs can become computationally expensive with increasing training data with time. Thus, with the proposed data selection and management using Mutual Information (MI) and Mahalanobis Distance (MD)approach, we have be able to keep the necessary portion of informative data and discard the others. This approach is then experimented by using the measurements of horizontal 2D scan of public area of our research centre with a stationary laser range finder. Experimental results show that even 90% reduction of data did not contribute to significantly increased Root Mean Square Error (RMSE). Implementation of Gaussian Process — Particle filter tracker for people tracking with long term occlusions produces a remarkable tracking performance when compared to Extended Kalman Filter (EKF) tracker.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132621412","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 : 2017-06-01DOI: 10.1109/ICIEA.2017.8282969
Ali Khademlahashy, Li Li, J. Every, Jianguo Zhu
According to recent developments, the application of distributed generations (DGs) has become popular especially in distribution systems. The high utilization of distributed generating resources in modern power systems can cause new challenges from protection coordination perspectives. Changing the distribution system structure from single-supply radial system to multi-source ring network, leads to the bidirectional power flow and also has a vital impact on protection coordination issues. In addition, micro-grids can be operated under grid-connected as well as islanded mode, and fault current is extensively different for these two operation modes. Therefore, traditional protection algorithms cannot be used in the advancement of power systems. In recent years, several research studies have been conducted to investigate the improvement of protection schemes in micro-grids. This paper presents a comprehensive review on protection problems resulting from micro-grids embedded with DGs, and discusses some alternate protection strategies.
{"title":"A review on protection issues in micro-grids embedded with distribution generations","authors":"Ali Khademlahashy, Li Li, J. Every, Jianguo Zhu","doi":"10.1109/ICIEA.2017.8282969","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8282969","url":null,"abstract":"According to recent developments, the application of distributed generations (DGs) has become popular especially in distribution systems. The high utilization of distributed generating resources in modern power systems can cause new challenges from protection coordination perspectives. Changing the distribution system structure from single-supply radial system to multi-source ring network, leads to the bidirectional power flow and also has a vital impact on protection coordination issues. In addition, micro-grids can be operated under grid-connected as well as islanded mode, and fault current is extensively different for these two operation modes. Therefore, traditional protection algorithms cannot be used in the advancement of power systems. In recent years, several research studies have been conducted to investigate the improvement of protection schemes in micro-grids. This paper presents a comprehensive review on protection problems resulting from micro-grids embedded with DGs, and discusses some alternate protection strategies.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133315409","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 : 2017-06-01DOI: 10.1109/ICIEA.2017.8282892
Y. Liu, W. Qin, Xiaoqing Han, Peng Wang
With the rapid development of new energy generation, the influence of large-scale wind/solar hybrid system on power system transient voltage stability cannot be ignored. First, large-scale wind/solar hybrid system model is established based on simulation software Power Factory/DIgSILENT in this paper. An advanced control strategy for hybrid model by adding a damping controller in the rotor side of DFIG is proposed. This strategy could improve the fault ride through capability of wind turbines effectively. Second, the effect of large-scale wind/solar hybrid system on transient voltage stability is analyzed in different operation modes. The analysis results show that the effect of wind/solar hybrid system mode on system voltage oscillation is the lowest compared with the wind turbines operating separately mode and PV panels operating separately mode. The stability and safety of the power grid based on the hybrid system are improved. Finally, the efficiency and accuracy of the proposed control scheme are validated by simulation software Power Factory/DIgSILENT.
{"title":"Modelling of large-scale wind/solar hybrid system and influence analysis on power system transient voltage stability","authors":"Y. Liu, W. Qin, Xiaoqing Han, Peng Wang","doi":"10.1109/ICIEA.2017.8282892","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8282892","url":null,"abstract":"With the rapid development of new energy generation, the influence of large-scale wind/solar hybrid system on power system transient voltage stability cannot be ignored. First, large-scale wind/solar hybrid system model is established based on simulation software Power Factory/DIgSILENT in this paper. An advanced control strategy for hybrid model by adding a damping controller in the rotor side of DFIG is proposed. This strategy could improve the fault ride through capability of wind turbines effectively. Second, the effect of large-scale wind/solar hybrid system on transient voltage stability is analyzed in different operation modes. The analysis results show that the effect of wind/solar hybrid system mode on system voltage oscillation is the lowest compared with the wind turbines operating separately mode and PV panels operating separately mode. The stability and safety of the power grid based on the hybrid system are improved. Finally, the efficiency and accuracy of the proposed control scheme are validated by simulation software Power Factory/DIgSILENT.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115549812","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 : 2017-06-01DOI: 10.1109/ICIEA.2017.8283096
B. Wen, T. Jiang, Cungang Hu, Hao Meng, Zhe Qian
The traditional proportional resonant (PR) regulator is sensitive to the frequency fluctuation of the power grid, and the gain is very limited for the non-resonant frequency. Therefore, in this paper, a quasi-PR controller easy to be implemented is proposed. The frequency feedback is introduced in order to increase bandwidth, and the frequency fluctuation of the power grid is controlled by the phase locked loop. The solar grid-connected inverter based on the PR controller had some advantages, such as making use of the controller infinite gain in the resonance frequency and eliminating the steady-state error. The simulation model of the grid-connected inverter is constructed to verify the theoretical analysis. The PR control algorithm can selectively make certain frequency enhancement, so as to achieve the effect of harmonic filtering.
{"title":"Application of quasi proportional resonant scheme in grid-connected inverter","authors":"B. Wen, T. Jiang, Cungang Hu, Hao Meng, Zhe Qian","doi":"10.1109/ICIEA.2017.8283096","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8283096","url":null,"abstract":"The traditional proportional resonant (PR) regulator is sensitive to the frequency fluctuation of the power grid, and the gain is very limited for the non-resonant frequency. Therefore, in this paper, a quasi-PR controller easy to be implemented is proposed. The frequency feedback is introduced in order to increase bandwidth, and the frequency fluctuation of the power grid is controlled by the phase locked loop. The solar grid-connected inverter based on the PR controller had some advantages, such as making use of the controller infinite gain in the resonance frequency and eliminating the steady-state error. The simulation model of the grid-connected inverter is constructed to verify the theoretical analysis. The PR control algorithm can selectively make certain frequency enhancement, so as to achieve the effect of harmonic filtering.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115607487","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 : 2017-06-01DOI: 10.1109/ICIEA.2017.8283033
Cao Van Kien, Nguyen Ngoc Son, H. Anh
This paper proposes a new method for identifying a nonlinear pneumatic artificial muscle (PAM) 2-dof parallel system based on the novel NARX multilayer fuzzy model optimized by differential evolution (DE) algorithm. A multilayer fuzzy system is created by combining several MISO multilayer fuzzy models. Each MISO multilayer Fuzzy model is implemented through several Fuzzy Takagi-Sugeno sets. Then fuzzy structures and fuzzy rules of proposed multilayer fuzzy model were optimally trained by DE algorithm. The experiment results are presented. It proves a promisingly scalable and simple method to successfully identify nonlinear MIMO system.
{"title":"Identification of 2-DOF pneumatic artificial muscle system with multilayer fuzzy logic and differential evolution algorithm","authors":"Cao Van Kien, Nguyen Ngoc Son, H. Anh","doi":"10.1109/ICIEA.2017.8283033","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8283033","url":null,"abstract":"This paper proposes a new method for identifying a nonlinear pneumatic artificial muscle (PAM) 2-dof parallel system based on the novel NARX multilayer fuzzy model optimized by differential evolution (DE) algorithm. A multilayer fuzzy system is created by combining several MISO multilayer fuzzy models. Each MISO multilayer Fuzzy model is implemented through several Fuzzy Takagi-Sugeno sets. Then fuzzy structures and fuzzy rules of proposed multilayer fuzzy model were optimally trained by DE algorithm. The experiment results are presented. It proves a promisingly scalable and simple method to successfully identify nonlinear MIMO system.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115889706","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}
In this paper, we focus on the learning strategy of path planning for Unmanned Aerial Vehicles (UAVs). We propose the G-Learning method to solve the problem of path planning in 3D and optimize the model algorithm. With G-Learning algorithm, the cost matrix can be calculated in real-time and adaptively updated based on the geometric distance and risk information shared with other UAVs. Extensive experimental results validate the effectiveness and feasibility of CGLA for safe navigation of multiple UAVs.
{"title":"3D G-learning in UAVs","authors":"Shangzhen Luan, Yun Yang, Hainan Wang, Baochang Zhang, Baoguo Yu, Chenglong He","doi":"10.1109/ICIEA.2017.8282976","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8282976","url":null,"abstract":"In this paper, we focus on the learning strategy of path planning for Unmanned Aerial Vehicles (UAVs). We propose the G-Learning method to solve the problem of path planning in 3D and optimize the model algorithm. With G-Learning algorithm, the cost matrix can be calculated in real-time and adaptively updated based on the geometric distance and risk information shared with other UAVs. Extensive experimental results validate the effectiveness and feasibility of CGLA for safe navigation of multiple UAVs.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117259195","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 : 2017-06-01DOI: 10.1109/ICIEA.2017.8282843
Cheng Yu, He Yu, Tingzheng Chen, Xiaofei Lu
Continuous Phase Modulation (CPM) scheme is one of the constant-envelope digital modulation schemes, the constant-envelope nature of CPM signals makes them robust for the nonlinear and fading channels which typically stand for the satellite and the mobile radio channels. CPM can be decomposed into a Continuous Phase Encoder (CPE) followed by a Memoryless Modulator (MM). Various forms of the encoder enable many new modulation schemes by the combination of the novel encoder and MM. This paper first proposes a new extended CPM (ECPM) scheme which uses the Extended Channel Encoder (ECE) of good property. Then a comparison of the Bit-Error-Rate (BER) of CPM and ECPM is performed through simulation. Experimental results show that ECE is a good choice for improving the performance of CPM scheme.
{"title":"Coded CPM applying to SCCPM scheme","authors":"Cheng Yu, He Yu, Tingzheng Chen, Xiaofei Lu","doi":"10.1109/ICIEA.2017.8282843","DOIUrl":"https://doi.org/10.1109/ICIEA.2017.8282843","url":null,"abstract":"Continuous Phase Modulation (CPM) scheme is one of the constant-envelope digital modulation schemes, the constant-envelope nature of CPM signals makes them robust for the nonlinear and fading channels which typically stand for the satellite and the mobile radio channels. CPM can be decomposed into a Continuous Phase Encoder (CPE) followed by a Memoryless Modulator (MM). Various forms of the encoder enable many new modulation schemes by the combination of the novel encoder and MM. This paper first proposes a new extended CPM (ECPM) scheme which uses the Extended Channel Encoder (ECE) of good property. Then a comparison of the Bit-Error-Rate (BER) of CPM and ECPM is performed through simulation. Experimental results show that ECE is a good choice for improving the performance of CPM scheme.","PeriodicalId":443463,"journal":{"name":"2017 12th IEEE Conference on Industrial Electronics and Applications (ICIEA)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116170359","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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