J. Virtanen, L. Ukkonen, T. Bjorninen, L. Sydanheimo, A. Elsherbeni
This paper presents a novel temperature sensor tag for passive UHF RFID systems and discusses a method to perform measurements in practice. The developed sensor tag is fabricated from cost-efficient and commercially available materials. Distilled water is used as the temperature sensitive material instead of the more traditional semi-conducting materials. The tag is fabricated on a FR-4 substrate which provides a rigid backing for the tag. The sensor can be constructed with a commercial passive UHF RFID IC. The temperature sensor tag's measurement range spans from a theoretical low of 0 up to over 74 °C. The read range of the tag, in free space, is over 7 metres.
本文提出了一种用于无源超高频射频识别系统的新型温度传感器标签，并讨论了在实际中进行测量的方法。开发的传感器标签是由具有成本效益和商业可用的材料制成的。蒸馏水被用作温度敏感材料，而不是更传统的半导体材料。该标签在FR-4基板上制造，该基板为标签提供刚性背衬。该传感器可以用商用无源UHF RFID IC构建。温度传感器标签的测量范围从理论低点0到超过74°C。在自由空间，标签的读取范围超过7米。
{"title":"Temperature sensor tag for passive UHF RFID systems","authors":"J. Virtanen, L. Ukkonen, T. Bjorninen, L. Sydanheimo, A. Elsherbeni","doi":"10.1108/SR-12-2011-681","DOIUrl":"https://doi.org/10.1108/SR-12-2011-681","url":null,"abstract":"This paper presents a novel temperature sensor tag for passive UHF RFID systems and discusses a method to perform measurements in practice. The developed sensor tag is fabricated from cost-efficient and commercially available materials. Distilled water is used as the temperature sensitive material instead of the more traditional semi-conducting materials. The tag is fabricated on a FR-4 substrate which provides a rigid backing for the tag. The sensor can be constructed with a commercial passive UHF RFID IC. The temperature sensor tag's measurement range spans from a theoretical low of 0 up to over 74 °C. The read range of the tag, in free space, is over 7 metres.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124458303","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739773
C. S. Marino, P. Chau
Virtual sensors are used to attain a robust high-resolution imaging capability that detects weak signals in the presence of strong signals, when the sensors are limited in number due to space, weight, power, and cost constraints. Such conditions are becoming commonplace with the influx of smart systems, wireless networks, remote sensing, and autonomous vehicles/systems. The virtual sensor data is created autonomously in real time from the original data using a novel two-dimensional (2-D) Autoregressive Vector Prediction algorithm. A 2-D transform is then applied to the new virtual data set, which includes the original data, to give a robust high resolution imaging capability. Simulations are used to compare this super-resolution capability with a high-resolution technique and the truth, to resolve previously obscured low-level signals in the presence of a dominant source. The virtual sensor data is also compared to the truth data. We also summarize the computational cost and extrapolation stability to achieve this high-resolution capability.
{"title":"High-resolution imaging using virtual sensors from 2-D autoregressive vector extrapolation","authors":"C. S. Marino, P. Chau","doi":"10.1109/SAS.2011.5739773","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739773","url":null,"abstract":"Virtual sensors are used to attain a robust high-resolution imaging capability that detects weak signals in the presence of strong signals, when the sensors are limited in number due to space, weight, power, and cost constraints. Such conditions are becoming commonplace with the influx of smart systems, wireless networks, remote sensing, and autonomous vehicles/systems. The virtual sensor data is created autonomously in real time from the original data using a novel two-dimensional (2-D) Autoregressive Vector Prediction algorithm. A 2-D transform is then applied to the new virtual data set, which includes the original data, to give a robust high resolution imaging capability. Simulations are used to compare this super-resolution capability with a high-resolution technique and the truth, to resolve previously obscured low-level signals in the presence of a dominant source. The virtual sensor data is also compared to the truth data. We also summarize the computational cost and extrapolation stability to achieve this high-resolution capability.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131439457","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739807
N. Yamani, A. Al-Anbuky
This work focuses on developing cool store's thermal mapping system based on the neuro Wireless Sensor Network (nWSN). The network intelligence is taken care of by the sensor network embedded neural net. The target application of the architecture development is for cool stores with emphasis on meat storage. The meat quality is a significant characteristic within the cold chain management. Temperature is the main parameter that needs to be monitored. nWSN architecture deals with the distributed neural network (NN) that predicts the temperature variations within the space. WSN nodes have categorized into infrastructural sensor nodes and portable sensor nodes. The neural net algorithm is embedded into the fully functional infrastructural nodes while portable nodes provide the surrounding information. The portable nodes that are attached to the meat carcass are dynamically establishing connection with one of the infrastructural nodes. The overall network formulates clusters based on Dijkstra's algorithm. The Nodes Message interaction (NMi) model is developed to organize the communication between the infrastructural nodes and portable nodes. This work disclosed the viability of nWSN architecture to execute further on a real-time test bed. It is found that the Mean Absolute Error (MAE) at the infrastructural nodes has a variation of 1°C. The resulting MAE is considerably good where nWSN can be capable of yielding similar applications of predictions.
{"title":"Neuro Wireless Sensor Network architecture: Cool stores dynamic thermal mapping","authors":"N. Yamani, A. Al-Anbuky","doi":"10.1109/SAS.2011.5739807","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739807","url":null,"abstract":"This work focuses on developing cool store's thermal mapping system based on the neuro Wireless Sensor Network (nWSN). The network intelligence is taken care of by the sensor network embedded neural net. The target application of the architecture development is for cool stores with emphasis on meat storage. The meat quality is a significant characteristic within the cold chain management. Temperature is the main parameter that needs to be monitored. nWSN architecture deals with the distributed neural network (NN) that predicts the temperature variations within the space. WSN nodes have categorized into infrastructural sensor nodes and portable sensor nodes. The neural net algorithm is embedded into the fully functional infrastructural nodes while portable nodes provide the surrounding information. The portable nodes that are attached to the meat carcass are dynamically establishing connection with one of the infrastructural nodes. The overall network formulates clusters based on Dijkstra's algorithm. The Nodes Message interaction (NMi) model is developed to organize the communication between the infrastructural nodes and portable nodes. This work disclosed the viability of nWSN architecture to execute further on a real-time test bed. It is found that the Mean Absolute Error (MAE) at the infrastructural nodes has a variation of 1°C. The resulting MAE is considerably good where nWSN can be capable of yielding similar applications of predictions.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128848902","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739822
T. Shanklin, Benjamin Loulier, E. Matson
Indoor location-based applications have a broad appeal for development in navigation, robotics, gaming, asset tracking, networking, and more. GPS technologies have been successfully leveraged for outdoor navigation, but often lose effectiveness indoors due to a more constrained environment, possible loss of signal, lack of elevation information and need for better accuracy. This paper presents our experimental results to create an indoor positioning system using a current model Smartphone: the Apple iPhone 4 and the embedded sensors.
{"title":"Embedded sensors for indoor positioning","authors":"T. Shanklin, Benjamin Loulier, E. Matson","doi":"10.1109/SAS.2011.5739822","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739822","url":null,"abstract":"Indoor location-based applications have a broad appeal for development in navigation, robotics, gaming, asset tracking, networking, and more. GPS technologies have been successfully leveraged for outdoor navigation, but often lose effectiveness indoors due to a more constrained environment, possible loss of signal, lack of elevation information and need for better accuracy. This paper presents our experimental results to create an indoor positioning system using a current model Smartphone: the Apple iPhone 4 and the embedded sensors.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126048117","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739780
Dong-Cheol Han, Sekwang Park
This paper presents a study on the analysis of the characteristics according to the arrangement and number of receivers of a system that determines wind direction and velocity, by measuring the phase difference of continuous-wave ultrasonic waves. The sensitivity and measurement range were geometrically analyzed and experimentally verified according to the arrangement and number of receivers when the lengths of the movement paths of the ultrasonic signals and the angles of the movement paths with the wind were identical.
{"title":"A study on characteristics of continuous wave ultrasonic anemometer","authors":"Dong-Cheol Han, Sekwang Park","doi":"10.1109/SAS.2011.5739780","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739780","url":null,"abstract":"This paper presents a study on the analysis of the characteristics according to the arrangement and number of receivers of a system that determines wind direction and velocity, by measuring the phase difference of continuous-wave ultrasonic waves. The sensitivity and measurement range were geometrically analyzed and experimentally verified according to the arrangement and number of receivers when the lengths of the movement paths of the ultrasonic signals and the angles of the movement paths with the wind were identical.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124950616","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739768
E. Sardini, M. Serpelloni
High temperature measurement systems do not allow the use of traditional measurement techniques. In the presence of high temperatures the proper functioning of electronics is compromised. Furthermore, if the measurement environment is also hermetic, the traditional cabled measurement technique cannot be adopted. In this article a system to measure the temperature up to 330 °C for harsh environments is proposed. The system is based on a hybrid MEMS placed inside the measuring chamber constituted solely by passive components (an inductor connected to a planar micromachined variable capacitor) and an external reading unit, located in the safe environment. The hybrid MEMS was designed and characterized, as well as the electronics of the readout unit. The results obtained and reported in the article are quite good with those measured by a reference instrument. The complete measurement system is presented as a viable solution to the measurement of high temperatures in harsh industrial environments.
{"title":"High-temperature measurement system with wireless electronics for harsh environments","authors":"E. Sardini, M. Serpelloni","doi":"10.1109/SAS.2011.5739768","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739768","url":null,"abstract":"High temperature measurement systems do not allow the use of traditional measurement techniques. In the presence of high temperatures the proper functioning of electronics is compromised. Furthermore, if the measurement environment is also hermetic, the traditional cabled measurement technique cannot be adopted. In this article a system to measure the temperature up to 330 °C for harsh environments is proposed. The system is based on a hybrid MEMS placed inside the measuring chamber constituted solely by passive components (an inductor connected to a planar micromachined variable capacitor) and an external reading unit, located in the safe environment. The hybrid MEMS was designed and characterized, as well as the electronics of the readout unit. The results obtained and reported in the article are quite good with those measured by a reference instrument. The complete measurement system is presented as a viable solution to the measurement of high temperatures in harsh industrial environments.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133510070","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739826
P. Jansson, K. Whitten, J. Schmalzel
In the design of a solar photovoltaic system, one criterion that continues to receive low priority is the provision of minimum inter row spacing for photovoltaic modules. Consumers and installers alike strive to maximize area usage for systems such that they achieve the highest amount of annual energy output. This, in turn, leads to module rows being designed very close to each other; with array tilt lowered in an attempt to reduce inter row shading. This design practice fails to take into consideration many effects that close row spacing can have on system output. When designing a photovoltaic array to optimize its performance as a power generator and its contribution to the electric grid during peak demand periods - shading concerns become a key consideration. This paper describes a process developed at Rowan University's Center for Sustainable Design to test the impact that inter row shading can have on power output and performance across the day. A test rig and protocol were created which tested module's output given various depths of shading from one row of modules upon another. The exclusion of bypass diodes in the system was also tested to view the most extreme possible cases of power loss induced by shading. The results of this experimentation showed that even very small amounts of shading upon solar photovoltaic modules can lead to significant loss in power generation. As more PV systems are installed on the utility system their availability during peak times becomes an ever increasing requirement for Smart Grid success. This paper also explores the ramifications that proper inter row spacing design guidelines could have on reinforcing some of the fundamental principles of Smart Grid.
{"title":"Photovoltaic module shading: Smart Grid impacts","authors":"P. Jansson, K. Whitten, J. Schmalzel","doi":"10.1109/SAS.2011.5739826","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739826","url":null,"abstract":"In the design of a solar photovoltaic system, one criterion that continues to receive low priority is the provision of minimum inter row spacing for photovoltaic modules. Consumers and installers alike strive to maximize area usage for systems such that they achieve the highest amount of annual energy output. This, in turn, leads to module rows being designed very close to each other; with array tilt lowered in an attempt to reduce inter row shading. This design practice fails to take into consideration many effects that close row spacing can have on system output. When designing a photovoltaic array to optimize its performance as a power generator and its contribution to the electric grid during peak demand periods - shading concerns become a key consideration. This paper describes a process developed at Rowan University's Center for Sustainable Design to test the impact that inter row shading can have on power output and performance across the day. A test rig and protocol were created which tested module's output given various depths of shading from one row of modules upon another. The exclusion of bypass diodes in the system was also tested to view the most extreme possible cases of power loss induced by shading. The results of this experimentation showed that even very small amounts of shading upon solar photovoltaic modules can lead to significant loss in power generation. As more PV systems are installed on the utility system their availability during peak times becomes an ever increasing requirement for Smart Grid success. This paper also explores the ramifications that proper inter row spacing design guidelines could have on reinforcing some of the fundamental principles of Smart Grid.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115844043","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739777
Hiren Kumar Deva Sarma, A. Kar, R. Mall
The proposed routing protocol for Wireless Sensor Network is hierarchical and cluster based. The protocol supports mobility in the Sensor Nodes as well as in the Sink. The entire protocol is described in terms of two phases namely Setup Phase and Data Forwarding Phase. After deployment of the Sensor Nodes entire sensor field in divided into some logical clusters and each cluster contains Sensor Nodes with different roles such as Gateway Node, Cluster Head Node and Ordinary Sensor Node. Majority of the computation intensive tasks are carried out in the Sink. Simulation results show the energy efficiency of the proposed protocol. The performance of the proposed protocol has been compared with that of CBR mobile WSN and results show better performance of the proposed protocol. Future scope of the work is outlined.
{"title":"Energy efficient routing protocol for Wireless Sensor Networks with Node and Sink mobility","authors":"Hiren Kumar Deva Sarma, A. Kar, R. Mall","doi":"10.1109/SAS.2011.5739777","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739777","url":null,"abstract":"The proposed routing protocol for Wireless Sensor Network is hierarchical and cluster based. The protocol supports mobility in the Sensor Nodes as well as in the Sink. The entire protocol is described in terms of two phases namely Setup Phase and Data Forwarding Phase. After deployment of the Sensor Nodes entire sensor field in divided into some logical clusters and each cluster contains Sensor Nodes with different roles such as Gateway Node, Cluster Head Node and Ordinary Sensor Node. Majority of the computation intensive tasks are carried out in the Sink. Simulation results show the energy efficiency of the proposed protocol. The performance of the proposed protocol has been compared with that of CBR mobile WSN and results show better performance of the proposed protocol. Future scope of the work is outlined.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128824482","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739825
Daniel Brateris, D. Bedford, David Calhoun, Aaron Johnson, Nickolas Kowalski, Kelli Martino, Thomas Mukalian, Justin Reda, Anthony Samaritano, R. Krchnavek
iOS is Apple's mobile operating system and is presently used on the iPhone, iPad, and iPod Touch. The hardware platforms associated with the iOS operating system provide a powerful platform for sensor applications. In this paper, we provide a case study on the development of a digital multimeter (DMM) using an iPod Touch. The DMM case study addresses the major subsystems (hardware, software, and firmware) of a typical sensor platform and specific advantages of implementation using an iOS device.
{"title":"iOS hardware as a sensor platform: DMM case study","authors":"Daniel Brateris, D. Bedford, David Calhoun, Aaron Johnson, Nickolas Kowalski, Kelli Martino, Thomas Mukalian, Justin Reda, Anthony Samaritano, R. Krchnavek","doi":"10.1109/SAS.2011.5739825","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739825","url":null,"abstract":"iOS is Apple's mobile operating system and is presently used on the iPhone, iPad, and iPod Touch. The hardware platforms associated with the iOS operating system provide a powerful platform for sensor applications. In this paper, we provide a case study on the development of a digital multimeter (DMM) using an iPod Touch. The DMM case study addresses the major subsystems (hardware, software, and firmware) of a typical sensor platform and specific advantages of implementation using an iOS device.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121588728","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 : 2011-03-28DOI: 10.1109/SAS.2011.5739804
D. Wobschall, Avarachan Cherian
A miniaturized multi-channel (16) thermocouple DAQ module was designed and tested. The connector and electronics configuration allows positioning of low-noise (< 1 µv) signal conditioning close to the test area and transmits the data on a high speed Ethernet to a central computer for analysis. It uses the IEEE 1451 smart transducer (open) standard and Transducer Electronic Data Sheet (TEDS) to achieve the plug and play specification and also a low error rate. A precision time stamp using IEEE 1588 is provided.
{"title":"Miniaturized multi-channel thermocouple sensor system","authors":"D. Wobschall, Avarachan Cherian","doi":"10.1109/SAS.2011.5739804","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739804","url":null,"abstract":"A miniaturized multi-channel (16) thermocouple DAQ module was designed and tested. The connector and electronics configuration allows positioning of low-noise (< 1 µv) signal conditioning close to the test area and transmits the data on a high speed Ethernet to a central computer for analysis. It uses the IEEE 1451 smart transducer (open) standard and Transducer Electronic Data Sheet (TEDS) to achieve the plug and play specification and also a low error rate. A precision time stamp using IEEE 1588 is provided.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"119 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133558700","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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