Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108920
O. Schipor, Adrian Aiordachioae
People with visual impairments encounter many challenges in their everyday life, such as reading text and street signs, shopping, driving, or recognizing facial expressions. Smartglasses applications can assist with all of these tasks. In this paper, we present the technical details of a smartglasses application for users with visual impairments that implements assistive features controlled via voice input commands. We specify the design requirements of our application, which we implement and demonstrate for the Vuzix Blade smartglasses.
{"title":"Engineering Details of a Smartglasses Application for Users with Visual Impairments","authors":"O. Schipor, Adrian Aiordachioae","doi":"10.1109/DAS49615.2020.9108920","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108920","url":null,"abstract":"People with visual impairments encounter many challenges in their everyday life, such as reading text and street signs, shopping, driving, or recognizing facial expressions. Smartglasses applications can assist with all of these tasks. In this paper, we present the technical details of a smartglasses application for users with visual impairments that implements assistive features controlled via voice input commands. We specify the design requirements of our application, which we implement and demonstrate for the Vuzix Blade smartglasses.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126173201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108919
V. Oleschuk, V. Ermuratskii, I. Vasiliev
This manuscript presents short survey of basic techniques and algorithms of synchronous space-vector modulation for control of voltage source inverters of motor drives in the overmodulation control mode. These control regimes are characterized by specific control schemes which are differ from schemes of synchronous PWM for linear (undermodulation) control regimes of inverters. So, specialized overmodulation-focused schemes, techniques, and algorithms of synchronous PWM have been reviewed regarding some basic topologies of drive inverters: a) standard three-phase inverters; b) dual three-phase and six-phase systems; c) modular converters; d) triple-inverter-based systems, and e) five-phase inverters.
{"title":"Review of Overmodulation Control Techniques of Drive Inverters with Synchronous Space-Vector PWM","authors":"V. Oleschuk, V. Ermuratskii, I. Vasiliev","doi":"10.1109/DAS49615.2020.9108919","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108919","url":null,"abstract":"This manuscript presents short survey of basic techniques and algorithms of synchronous space-vector modulation for control of voltage source inverters of motor drives in the overmodulation control mode. These control regimes are characterized by specific control schemes which are differ from schemes of synchronous PWM for linear (undermodulation) control regimes of inverters. So, specialized overmodulation-focused schemes, techniques, and algorithms of synchronous PWM have been reviewed regarding some basic topologies of drive inverters: a) standard three-phase inverters; b) dual three-phase and six-phase systems; c) modular converters; d) triple-inverter-based systems, and e) five-phase inverters.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116825199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108954
C. Cristea, M. Cristea, I. Birou, R. Tirnovan
Solar energy is one of the most valuable renewable energy sources and, as the technologies advances, is expected to be an increasingly viable alternative to conventional energy sources. Battery energy storage systems represent a solution for solving the problem of solar resource intermittency and, at the same time, may decrease the electricity bill by supplementing the electricity self-consumption of residences. This paper is aiming to evaluate from a technical and economic point of view the viability of a grid-connected rooftop solar photovoltaic system combined with several battery energy storage systems for a residence in Romania. The results obtained indicated that mainly due to current costs of energy storage and photovoltaics, the installation of a battery energy storage system together with a photovoltaic system could be profitable only when upfront subsidies are granted.
{"title":"Techno-economic evaluation of a grid-connected residential rooftop photovoltaic system with battery energy storage system: a Romanian case study","authors":"C. Cristea, M. Cristea, I. Birou, R. Tirnovan","doi":"10.1109/DAS49615.2020.9108954","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108954","url":null,"abstract":"Solar energy is one of the most valuable renewable energy sources and, as the technologies advances, is expected to be an increasingly viable alternative to conventional energy sources. Battery energy storage systems represent a solution for solving the problem of solar resource intermittency and, at the same time, may decrease the electricity bill by supplementing the electricity self-consumption of residences. This paper is aiming to evaluate from a technical and economic point of view the viability of a grid-connected rooftop solar photovoltaic system combined with several battery energy storage systems for a residence in Romania. The results obtained indicated that mainly due to current costs of energy storage and photovoltaics, the installation of a battery energy storage system together with a photovoltaic system could be profitable only when upfront subsidies are granted.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128316078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108937
C. Bejenar, N. Irimia, M. Luchian, F. Lazar
As the automotive industry is increasingly focusing on development of both partially and full-electric vehicles, the improvement and further concepts analysis of electric drive systems represents a priority for adopting the best cost performance solutions. This paper proposes a theoretical study followed by a simulation analysis of the dynamic response of an electrical actuator system driven by scalar control algorithm that can provide corresponding drive signals to (either) a Permanent Magnet Synchronous Motor (PMSM) or a Brushless Direct Current (BLDC) motor. For the basic design of the PMSM / BLDC motor was intensively used the Finite Element Method (FEM) software tool to obtain a more realistic and plausible model. The equivalent mathematical model of the proposed system (and its basic components) was further implemented in MATLAB / Simulink software environment for extended analysis under both static and dynamic operating conditions. One of the basics objectives of this study is to analyze the possibility of further integration of this type of systems into electric vehicles platforms, such as brake-by-wire or steering actuation systems.
{"title":"Dynamic Behavior Analysis of a Three-Phase BLDC Motor under Scalar Control Strategy for Automotive Actuation Systems","authors":"C. Bejenar, N. Irimia, M. Luchian, F. Lazar","doi":"10.1109/DAS49615.2020.9108937","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108937","url":null,"abstract":"As the automotive industry is increasingly focusing on development of both partially and full-electric vehicles, the improvement and further concepts analysis of electric drive systems represents a priority for adopting the best cost performance solutions. This paper proposes a theoretical study followed by a simulation analysis of the dynamic response of an electrical actuator system driven by scalar control algorithm that can provide corresponding drive signals to (either) a Permanent Magnet Synchronous Motor (PMSM) or a Brushless Direct Current (BLDC) motor. For the basic design of the PMSM / BLDC motor was intensively used the Finite Element Method (FEM) software tool to obtain a more realistic and plausible model. The equivalent mathematical model of the proposed system (and its basic components) was further implemented in MATLAB / Simulink software environment for extended analysis under both static and dynamic operating conditions. One of the basics objectives of this study is to analyze the possibility of further integration of this type of systems into electric vehicles platforms, such as brake-by-wire or steering actuation systems.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"257 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133405758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108917
Florin Butaru, Ciprian Carstea, C. Lascu, Mihaela-Codruta Ancuti
The purpose of the present paper is to build a predictive algorithm based on the output voltage of the LC filter in order to achieve the AC Microgrids operation in the maximum power point tracking of the captured solar energy. Methods of regulating the microgrids input voltage are conventionally achieved by linear control loops. This type of control presents limitations like high sensitivity to parameter variations and slow transient response. The operation of the microgrids at the maximum power point is analyzed. The inverter’s the optimal power values are determined based on the simulated data. The simulations were carried out in the MATLAB/Simulink simulation environment. Based on the vector control, the voltage drops on the inverter transistors are calculated in advanced for the next step, based on the phase diagram. A predictive algorithm is designed to ensure a stable operation in the maximum power point area, MPP, (i.e. the optimal area from the energy point of view).
{"title":"Optimal Operation of Microgrid Employing Predictive Control","authors":"Florin Butaru, Ciprian Carstea, C. Lascu, Mihaela-Codruta Ancuti","doi":"10.1109/DAS49615.2020.9108917","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108917","url":null,"abstract":"The purpose of the present paper is to build a predictive algorithm based on the output voltage of the LC filter in order to achieve the AC Microgrids operation in the maximum power point tracking of the captured solar energy. Methods of regulating the microgrids input voltage are conventionally achieved by linear control loops. This type of control presents limitations like high sensitivity to parameter variations and slow transient response. The operation of the microgrids at the maximum power point is analyzed. The inverter’s the optimal power values are determined based on the simulated data. The simulations were carried out in the MATLAB/Simulink simulation environment. Based on the vector control, the voltage drops on the inverter transistors are calculated in advanced for the next step, based on the phase diagram. A predictive algorithm is designed to ensure a stable operation in the maximum power point area, MPP, (i.e. the optimal area from the energy point of view).","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"72 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123590880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108951
A. Silaghi, A. De Sabata, A. Graur, Radu Fechet
A circuit simulation model for a combination wave generator used in Automotive immunity testing has been devised and is reported in this paper. The open circuit voltage and short circuit current outputs from the model have been validated by comparison with experimental data. A further validation has been accomplished by using the generator in a simulated immunity test on an Automotive product and comparing results with data from an actual immunity test performed in the laboratory. The main contribution of this paper is to provide a simulation tool that can be used in design and verification of Automotive products, to prove that they are according to IEC 61000 standard requirements.
{"title":"Simulation of Surge Pulse Generator and Applications in Automotive Immunity Testing","authors":"A. Silaghi, A. De Sabata, A. Graur, Radu Fechet","doi":"10.1109/DAS49615.2020.9108951","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108951","url":null,"abstract":"A circuit simulation model for a combination wave generator used in Automotive immunity testing has been devised and is reported in this paper. The open circuit voltage and short circuit current outputs from the model have been validated by comparison with experimental data. A further validation has been accomplished by using the generator in a simulated immunity test on an Automotive product and comparing results with data from an actual immunity test performed in the laboratory. The main contribution of this paper is to provide a simulation tool that can be used in design and verification of Automotive products, to prove that they are according to IEC 61000 standard requirements.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128625182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108921
A. Lavric, A. Petrariu, E. Coca, V. Popa
In order to cope with the new challenges and IoT applications LPWAN (Low-Power Wide-Area Network) networks have been created. The IoT (Internet of Things) concept is currently in the focus of the entire academic community. The main contribution of the work is the performance level evaluation associated to the LoRaWAN scalability. Within the scientific literature, there are a series of scientific papers which attempt to analyze the performance level of LoRaWAN communication technology, but none of them use a specialized software like SimpleIoTSimulator. This paper comes to fill in the gap and tries to materialize a study that allows for the analysis of the performance level. The user can easily generate the traffic from tens of thousands of LoRa nodes. The SimpleIoTSimulator platform can be directly connected to the TTN Server that receives the traffic as it is generated by real LoRa sensors. From the obtained results we can conclude that SimpleIoTSimulator ensures a high level of performance and will contribute to the opening of new research directions in the field of high density LoRa sensor networks.
{"title":"LoRaWAN Analysis from a High-Density Internet of Things Perspective","authors":"A. Lavric, A. Petrariu, E. Coca, V. Popa","doi":"10.1109/DAS49615.2020.9108921","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108921","url":null,"abstract":"In order to cope with the new challenges and IoT applications LPWAN (Low-Power Wide-Area Network) networks have been created. The IoT (Internet of Things) concept is currently in the focus of the entire academic community. The main contribution of the work is the performance level evaluation associated to the LoRaWAN scalability. Within the scientific literature, there are a series of scientific papers which attempt to analyze the performance level of LoRaWAN communication technology, but none of them use a specialized software like SimpleIoTSimulator. This paper comes to fill in the gap and tries to materialize a study that allows for the analysis of the performance level. The user can easily generate the traffic from tens of thousands of LoRa nodes. The SimpleIoTSimulator platform can be directly connected to the TTN Server that receives the traffic as it is generated by real LoRa sensors. From the obtained results we can conclude that SimpleIoTSimulator ensures a high level of performance and will contribute to the opening of new research directions in the field of high density LoRa sensor networks.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125692602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108957
Floarea Pitu, N. Gaitan
Internet of Things (IoT) became an accessible solution to the users for controlling and managing different processes and systems. Those systems can include features such as easily monitoring plants growing process, a thing that is widely needed now because of the population number exponential growth, expecting to reach 9.7 billion until the year 2050. This thing is going to increase the need for food exponentially and at the same thing, it is going to reduce the area of usable soil for agriculture while the available natural resources are going to decrease. The traditional methods of environment data collecting are still in use, such as using human labor periodically to determine the different conditions such as weather, water levels, and possible pests present in the fields. In this article, we are proposing a monitoring system capable of collecting information about the environment (such as, humidity, temperature, and luminosity) that could allow the optimal growth of plants by integrating a network of sensors capable of transmitting the collected data by using the SigFox technology. This system intends to increase productivity and profits, reduce human labor, and eventually, integrate other technologies to make the agricultural process simpler and more efficient.
{"title":"Surveillance of SigFox technology integrated with environmental monitoring","authors":"Floarea Pitu, N. Gaitan","doi":"10.1109/DAS49615.2020.9108957","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108957","url":null,"abstract":"Internet of Things (IoT) became an accessible solution to the users for controlling and managing different processes and systems. Those systems can include features such as easily monitoring plants growing process, a thing that is widely needed now because of the population number exponential growth, expecting to reach 9.7 billion until the year 2050. This thing is going to increase the need for food exponentially and at the same thing, it is going to reduce the area of usable soil for agriculture while the available natural resources are going to decrease. The traditional methods of environment data collecting are still in use, such as using human labor periodically to determine the different conditions such as weather, water levels, and possible pests present in the fields. In this article, we are proposing a monitoring system capable of collecting information about the environment (such as, humidity, temperature, and luminosity) that could allow the optimal growth of plants by integrating a network of sensors capable of transmitting the collected data by using the SigFox technology. This system intends to increase productivity and profits, reduce human labor, and eventually, integrate other technologies to make the agricultural process simpler and more efficient.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121868585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108911
Laura-Bianca Bilius
Web-based standards and technology, such as HTTP, JavaScript, and WebSockets, can bring many benefits to designing and engineering systems for in-vehicle infotainment (IVI). In this paper, we present the technical details of a software application for in-vehicle interactions that features WebSocketsbased communications between the driver’s smartwatch and a tablet installed in the car that runs a web-based interface and demonstrates features representative of those found in IVI systems. Our implementation is based on a Node.js server application that processes incoming data from the smartwatch, e.g., a list of preferred songs or the driver’s heart rate, and delivers that data to the in-vehicle infotainment system.
{"title":"A Smartwatch-based User Interface for In-Vehicle Interactions","authors":"Laura-Bianca Bilius","doi":"10.1109/DAS49615.2020.9108911","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108911","url":null,"abstract":"Web-based standards and technology, such as HTTP, JavaScript, and WebSockets, can bring many benefits to designing and engineering systems for in-vehicle infotainment (IVI). In this paper, we present the technical details of a software application for in-vehicle interactions that features WebSocketsbased communications between the driver’s smartwatch and a tablet installed in the car that runs a web-based interface and demonstrates features representative of those found in IVI systems. Our implementation is based on a Node.js server application that processes incoming data from the smartwatch, e.g., a list of preferred songs or the driver’s heart rate, and delivers that data to the in-vehicle infotainment system.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132607531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.1109/DAS49615.2020.9108971
Sudacevschi Viorica, Ababii Victor
A new method for multidimensional digital signal processing for Printed Circuit Boards (PCB) testing is described. The considered method comes to solve such problems as competition and synchronization, which are present in the multidimensional signals processing. The solution is achieved by performing in parallel all operations, replacing the analog-to-digital conversion (ADC) with differentiation operations and analyzing the signal variation rate based on the Fuzzy logic elements. As a result of these operations, using digital integration models, binary code streams are obtained that allow the reconstruction of the signal shape. Mathematical models applied for the transformation and processing of multidimensional signals are presented. The designed system for the multidimensional signal processing consists of a computing unit, the test signals generator, the data storage unit, the Printed Circuit Board with nodes for test signals application and retrieval, and finally the processing elements for differentiation and analysis based on Fuzzy logic.
{"title":"Multidimensional Digital Signal Processing for Printed Circuit Boards Testing","authors":"Sudacevschi Viorica, Ababii Victor","doi":"10.1109/DAS49615.2020.9108971","DOIUrl":"https://doi.org/10.1109/DAS49615.2020.9108971","url":null,"abstract":"A new method for multidimensional digital signal processing for Printed Circuit Boards (PCB) testing is described. The considered method comes to solve such problems as competition and synchronization, which are present in the multidimensional signals processing. The solution is achieved by performing in parallel all operations, replacing the analog-to-digital conversion (ADC) with differentiation operations and analyzing the signal variation rate based on the Fuzzy logic elements. As a result of these operations, using digital integration models, binary code streams are obtained that allow the reconstruction of the signal shape. Mathematical models applied for the transformation and processing of multidimensional signals are presented. The designed system for the multidimensional signal processing consists of a computing unit, the test signals generator, the data storage unit, the Printed Circuit Board with nodes for test signals application and retrieval, and finally the processing elements for differentiation and analysis based on Fuzzy logic.","PeriodicalId":103267,"journal":{"name":"2020 International Conference on Development and Application Systems (DAS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129067751","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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