Pub Date : 2016-11-01DOI: 10.1109/ICSENST.2016.7796303
Yuan Yu, Yujiao Shao, Yin Zhang, S. Wei, Xuefeng Li
In this paper, a new type of fiber optic press sensor based on polarization modulation is proposed and analyzed. The sensor is equipped with a high-birefringent photonic crystal fiber (HB-PCF) as sensing unit and used to measure the pressure in gaseous and liquid media. The linear polarized light injects into HB-PCF with 45° angle at the slow axis and the output light is separated into two perpendicular polarized light with 0° and 90°. Then one of them is rotated 90°, which combine with the other to form light interferometer. Pressure load affects the birefringence of HB-PCF, leading to the variety of output light intensity. The analysis result shows that the centripetal pressure increases the effective refractive index of polarization model in both fast and slow axes with a linear relationship of 8.97×10-6 RIU/MPa and 6.48×10-6 RIU/MPa respectively, so that tends to counteract the birefringence of the HB-PCF caused by its asymmetric structure, with a linear relationship of 2.49×10-6 RIU/MPa. Consequently, the pressure vary from 0 to 100 MPa can be inferred by the output light visibility. The proposed sensor has many advantages such as small volume, simple structure, strong environmental, and tolerance, etc. It can be widely used in pressure measurement and structure health monitoring.
{"title":"Design and analysis of a new type of pressure sensor based on the high-birefringent photonic crystal fiber","authors":"Yuan Yu, Yujiao Shao, Yin Zhang, S. Wei, Xuefeng Li","doi":"10.1109/ICSENST.2016.7796303","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796303","url":null,"abstract":"In this paper, a new type of fiber optic press sensor based on polarization modulation is proposed and analyzed. The sensor is equipped with a high-birefringent photonic crystal fiber (HB-PCF) as sensing unit and used to measure the pressure in gaseous and liquid media. The linear polarized light injects into HB-PCF with 45° angle at the slow axis and the output light is separated into two perpendicular polarized light with 0° and 90°. Then one of them is rotated 90°, which combine with the other to form light interferometer. Pressure load affects the birefringence of HB-PCF, leading to the variety of output light intensity. The analysis result shows that the centripetal pressure increases the effective refractive index of polarization model in both fast and slow axes with a linear relationship of 8.97×10-6 RIU/MPa and 6.48×10-6 RIU/MPa respectively, so that tends to counteract the birefringence of the HB-PCF caused by its asymmetric structure, with a linear relationship of 2.49×10-6 RIU/MPa. Consequently, the pressure vary from 0 to 100 MPa can be inferred by the output light visibility. The proposed sensor has many advantages such as small volume, simple structure, strong environmental, and tolerance, etc. It can be widely used in pressure measurement and structure health monitoring.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132240177","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 : 2016-11-01DOI: 10.1109/ICSENST.2016.7796224
L. Mo, Zengtao Feng, Jingyi Qian
This paper proposes a human physical activity (PA) recognition method based on incremental learning, which deal with the accuracy loss of traditional recognition system caused by the difference of different individuals. Firstly, the paper introduces the principle of incremental learning, which mainly introduced Learn++ algorithm principle, and describes the differentiation feedback optimization algorithm based on incremental learning in specific details. Then, taking the body sensor network built in the previous work as the data acquisition platform, this article conducts experiments of seven daily activities on five experimental individuals, and verifies the differentiation feedback optimization algorithm of this paper. According to the experiment results, the algorithm described in this paper has an obvious improvement effect on the physical activity recognition performance of the specific individuals.
{"title":"Human daily activity recognition with wearable sensors based on incremental learning","authors":"L. Mo, Zengtao Feng, Jingyi Qian","doi":"10.1109/ICSENST.2016.7796224","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796224","url":null,"abstract":"This paper proposes a human physical activity (PA) recognition method based on incremental learning, which deal with the accuracy loss of traditional recognition system caused by the difference of different individuals. Firstly, the paper introduces the principle of incremental learning, which mainly introduced Learn++ algorithm principle, and describes the differentiation feedback optimization algorithm based on incremental learning in specific details. Then, taking the body sensor network built in the previous work as the data acquisition platform, this article conducts experiments of seven daily activities on five experimental individuals, and verifies the differentiation feedback optimization algorithm of this paper. According to the experiment results, the algorithm described in this paper has an obvious improvement effect on the physical activity recognition performance of the specific individuals.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132248780","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 : 2016-11-01DOI: 10.1109/ICSENST.2016.7796336
Yanxin Wang, Hong Zeng, Jia Liu
Nowadays capturing the image of eyeball with camera and estimating gaze points using pupil positions is the most common method for eye-tracking devices. Head-mounted eye-tracking equipment has a wide range of application because of its flexibility and high gaze estimation accuracy. But the user's head should keep still using a chin rest or other tools, or will lead to enormous gaze estimation errors. In this paper, a head rotation compensation method is proposed for head-mounted eye-tracking glasses. The whole cost of our system is 38 USD. According to our preliminary result, the mean error of gaze estimation is reduced from 8.0162° to 0.5748°, which shows that our method can compensate head rotation effectively. The data in the task based experiment reveal that our system can be used as an alternative input device to mouse.
{"title":"Low-cost eye-tracking glasses with real-time head rotation compensation","authors":"Yanxin Wang, Hong Zeng, Jia Liu","doi":"10.1109/ICSENST.2016.7796336","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796336","url":null,"abstract":"Nowadays capturing the image of eyeball with camera and estimating gaze points using pupil positions is the most common method for eye-tracking devices. Head-mounted eye-tracking equipment has a wide range of application because of its flexibility and high gaze estimation accuracy. But the user's head should keep still using a chin rest or other tools, or will lead to enormous gaze estimation errors. In this paper, a head rotation compensation method is proposed for head-mounted eye-tracking glasses. The whole cost of our system is 38 USD. According to our preliminary result, the mean error of gaze estimation is reduced from 8.0162° to 0.5748°, which shows that our method can compensate head rotation effectively. The data in the task based experiment reveal that our system can be used as an alternative input device to mouse.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134148022","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 : 2016-11-01DOI: 10.1109/ICSENST.2016.7796327
Chuang Sun, B. Wang, Shaohua Tian, Xuefeng Chen
Bearing is a critical component that effects operational performance of machine. Fault classification to bearing that aims to identify category of bearing fault is helpful to improve reliability and safety of bearing. In this paper, a classification process is presented based on sparse subspace clustering. A sample corresponds to a specific fault state of the bearing is represented by its neighbourhood. Coefficient for data representation is solved by sparse representation. Spectral clustering is performed on the coefficient to classify the samples into its category. Effectiveness of the presented method is validated by test data of bearing with different degrees of fault. Comparison between sparse subspace clustering and other subspace analysis methods shows its effectiveness for classification further.
{"title":"Sparse subspace clustering for bearing fault classification","authors":"Chuang Sun, B. Wang, Shaohua Tian, Xuefeng Chen","doi":"10.1109/ICSENST.2016.7796327","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796327","url":null,"abstract":"Bearing is a critical component that effects operational performance of machine. Fault classification to bearing that aims to identify category of bearing fault is helpful to improve reliability and safety of bearing. In this paper, a classification process is presented based on sparse subspace clustering. A sample corresponds to a specific fault state of the bearing is represented by its neighbourhood. Coefficient for data representation is solved by sparse representation. Spectral clustering is performed on the coefficient to classify the samples into its category. Effectiveness of the presented method is validated by test data of bearing with different degrees of fault. Comparison between sparse subspace clustering and other subspace analysis methods shows its effectiveness for classification further.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134273501","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 : 2016-11-01DOI: 10.1109/ICSENST.2016.7796238
X. Li, Jian Wu
In this paper, we offer a new type of vehicle detection method based on the strength of the signal transmission with adopting CC1101 wireless communication chip, and RSSI (Received Signal Strength Indication) value of the data receiving node is different when there is a car or no car on the parking space. Through a large number of nodes arranged on the parking space, the data receiving node sends data that includes RSSI value and parking space state information to sink node constantly. Next, sink node receives data and uploads to system monitoring terminal. The experiment results show that vehicle detection method is high of accuracy, strong robustness and good reliability.
本文采用CC1101无线通信芯片，提出了一种基于信号传输强度的新型车辆检测方法，车位上有车和无车时，数据接收节点的RSSI (Received signal strength Indication，接收信号强度指示)值是不同的。数据接收节点通过在车位上布置的大量节点，不断向汇聚节点发送包括RSSI值和车位状态信息在内的数据。然后，汇聚节点接收数据并上传到系统监控终端。实验结果表明，该方法精度高，鲁棒性强，可靠性好。
{"title":"A new method and verification of vehicles detection based on RSSI variation","authors":"X. Li, Jian Wu","doi":"10.1109/ICSENST.2016.7796238","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796238","url":null,"abstract":"In this paper, we offer a new type of vehicle detection method based on the strength of the signal transmission with adopting CC1101 wireless communication chip, and RSSI (Received Signal Strength Indication) value of the data receiving node is different when there is a car or no car on the parking space. Through a large number of nodes arranged on the parking space, the data receiving node sends data that includes RSSI value and parking space state information to sink node constantly. Next, sink node receives data and uploads to system monitoring terminal. The experiment results show that vehicle detection method is high of accuracy, strong robustness and good reliability.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133151647","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 : 2016-11-01DOI: 10.1109/ICSENST.2016.7796307
Wangquan Ye, Ying Li, Wen-dong Li, Fujun Qi, R. Zheng
The establishment of the seafloor cabled observatory network will help to learn how the ocean operates. This study reports the design of a shore-based terminal for the OUC-Raman (OUC: Ocean University of China) instrument node in an observatory network. Based on Raman spectrometry, it is used to detect radical ion in situ. The shore-based terminal is divided into three main modules: communication module, data management module and user interface. Its functions include data collecting from underwater system, data processing and data transmitting. The terminal worked well and stably during a 40-days' land-based joint trial and sea trials.
{"title":"Shore-based terminal of OUC-Raman instrument node for seafloor cabled observatory network","authors":"Wangquan Ye, Ying Li, Wen-dong Li, Fujun Qi, R. Zheng","doi":"10.1109/ICSENST.2016.7796307","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796307","url":null,"abstract":"The establishment of the seafloor cabled observatory network will help to learn how the ocean operates. This study reports the design of a shore-based terminal for the OUC-Raman (OUC: Ocean University of China) instrument node in an observatory network. Based on Raman spectrometry, it is used to detect radical ion in situ. The shore-based terminal is divided into three main modules: communication module, data management module and user interface. Its functions include data collecting from underwater system, data processing and data transmitting. The terminal worked well and stably during a 40-days' land-based joint trial and sea trials.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115589206","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 : 2016-11-01DOI: 10.1109/ICSENST.2016.7796322
Malinda Dilhara, J. Samarawickrama, S. Elvitigala
We present a novel non-invasive current measuring platform that estimates the current through a bundled cable. The sensor platform contains eight three axis magnetometer breakout sensors. We develop a regression model to estimate the current flowing in the wire using captured data from the sensor platform. The model in the paper demonstrated accurate results for current estimation of two core wire (7.2 mm diameter) with mean absolute error as low as 0.03 A and root mean square error as low as 0.06 A. This work can be used to develop a plug and play instrument that can non-invasively measure current in a system without disturbing its behavior in operating environment.
{"title":"Sensor platform for non-invasive ubiquitous current sensing","authors":"Malinda Dilhara, J. Samarawickrama, S. Elvitigala","doi":"10.1109/ICSENST.2016.7796322","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796322","url":null,"abstract":"We present a novel non-invasive current measuring platform that estimates the current through a bundled cable. The sensor platform contains eight three axis magnetometer breakout sensors. We develop a regression model to estimate the current flowing in the wire using captured data from the sensor platform. The model in the paper demonstrated accurate results for current estimation of two core wire (7.2 mm diameter) with mean absolute error as low as 0.03 A and root mean square error as low as 0.06 A. This work can be used to develop a plug and play instrument that can non-invasively measure current in a system without disturbing its behavior in operating environment.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114277364","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 : 2016-11-01DOI: 10.1109/ICSENST.2016.7796273
Zhu Xuefen, Yang Dongrui, Chen Xiyuan, Chen Qiang
L2C is the second civilian signal broadcasted on the modernized block of GPS satellites. Compared with L1C/A, the length of L2C code is longer, and includes the civil moderate code (CM code, 20ms) and the civil long code (CL code, 1.5s), which are based on time division multiplexing. For the long CL code, rapid acquisition is difficult due to the large search space. To accelerate the search process and improve detection performance, a fast direct GPS L2C CL signal acquisition algorithm based on time-frequency dual folding technique is introduced in this paper. By folding both the incoming and local signals, the method can be used to significantly accelerate the acquisition speed, and the degraded code correlation properties are insignificant. The effectiveness of the method of fast direct acquisition algorithm based on the time-frequency folding technique is proven through both theoretical performance analysis and real GPS L2C signal experiments.
{"title":"A fast direct acquisition algorithm of GPS L2C CL signal based on time-frequency dual folding technique","authors":"Zhu Xuefen, Yang Dongrui, Chen Xiyuan, Chen Qiang","doi":"10.1109/ICSENST.2016.7796273","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796273","url":null,"abstract":"L2C is the second civilian signal broadcasted on the modernized block of GPS satellites. Compared with L1C/A, the length of L2C code is longer, and includes the civil moderate code (CM code, 20ms) and the civil long code (CL code, 1.5s), which are based on time division multiplexing. For the long CL code, rapid acquisition is difficult due to the large search space. To accelerate the search process and improve detection performance, a fast direct GPS L2C CL signal acquisition algorithm based on time-frequency dual folding technique is introduced in this paper. By folding both the incoming and local signals, the method can be used to significantly accelerate the acquisition speed, and the degraded code correlation properties are insignificant. The effectiveness of the method of fast direct acquisition algorithm based on the time-frequency folding technique is proven through both theoretical performance analysis and real GPS L2C signal experiments.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123912351","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 : 2016-11-01DOI: 10.1109/ICSENST.2016.7796221
M. Alahi, Nasrin Afsarimanesh, S. Mukhopadhyay, L. Burkitt, P. Yu
This research proposed the real-time detection of nitrite by employing electrochemical impedance spectroscopy (EIS) technique incorporating an interdigital capacitive sensor. A self-assembled monolayer functionalized the sensing surface with embedded ion-imprinted polymer (IIP) with selectivity for nitrite ions were introduced. Syntheis and characterization of IIP are also explained to validate the polymerization technique. Some initial results using different concentrations of nitrite sample to validate the proposed method are also presented. The promising results highlight the extraordinary potential to develop low-cost, in-situ measurement system to detect nitrite contamination with real-time monitoring.
{"title":"Highly selective ion imprinted polymer based interdigital sensor for nitrite detection","authors":"M. Alahi, Nasrin Afsarimanesh, S. Mukhopadhyay, L. Burkitt, P. Yu","doi":"10.1109/ICSENST.2016.7796221","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796221","url":null,"abstract":"This research proposed the real-time detection of nitrite by employing electrochemical impedance spectroscopy (EIS) technique incorporating an interdigital capacitive sensor. A self-assembled monolayer functionalized the sensing surface with embedded ion-imprinted polymer (IIP) with selectivity for nitrite ions were introduced. Syntheis and characterization of IIP are also explained to validate the polymerization technique. Some initial results using different concentrations of nitrite sample to validate the proposed method are also presented. The promising results highlight the extraordinary potential to develop low-cost, in-situ measurement system to detect nitrite contamination with real-time monitoring.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128045963","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 : 2016-11-01DOI: 10.1109/ICSENST.2016.7796268
Walid Elgenaidi, T. Newe, E. O’Connell, D. Toal, G. Dooly, Joseph Coleman
Handling the security in Wireless Sensor Networks (WSNs) requires cryptographic mechanisms to detect faulty and unstable nodes that lead to the inactivity of network during packet travelling. Although, cryptographic security mechanism operations demand a high calculation of computational time and memory resources, while the sensor nodes have low memory and low computation capability. Alternatively, trust management schemes are tools to address some main issues in WSNs including memory and storage space, key generation, and re-keying. In this work, we will present solution of memory resources consumption and key management processing issues for a secure maritime coastal monitoring system. This system is a symmetric security scheme with a dynamic update key based on a trusted node configuration, called a leader node, which works as a trusted third party.
{"title":"Memory storage administration of security encryption keys for line topology in maritime wireless sensor networks","authors":"Walid Elgenaidi, T. Newe, E. O’Connell, D. Toal, G. Dooly, Joseph Coleman","doi":"10.1109/ICSENST.2016.7796268","DOIUrl":"https://doi.org/10.1109/ICSENST.2016.7796268","url":null,"abstract":"Handling the security in Wireless Sensor Networks (WSNs) requires cryptographic mechanisms to detect faulty and unstable nodes that lead to the inactivity of network during packet travelling. Although, cryptographic security mechanism operations demand a high calculation of computational time and memory resources, while the sensor nodes have low memory and low computation capability. Alternatively, trust management schemes are tools to address some main issues in WSNs including memory and storage space, key generation, and re-keying. In this work, we will present solution of memory resources consumption and key management processing issues for a secure maritime coastal monitoring system. This system is a symmetric security scheme with a dynamic update key based on a trusted node configuration, called a leader node, which works as a trusted third party.","PeriodicalId":297617,"journal":{"name":"2016 10th International Conference on Sensing Technology (ICST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130880203","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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