Pub Date : 2021-12-20DOI: 10.1109/scc53769.2021.9768367
M. A. Belaid
This Study presents a bench is dedicated to high RF power device lifetime tests under RF pulses for radar application. This bench combined the stress tests (RF, electrical and thermal,) applied to devices and have a direct impact on their lifetime. A complete device electric characterization (I-V, C-V and RF) has been conducted before/after different temperatures (3000 hours at 150° C and 10° C), and material clarifications for the phenomenon of failure, the reliability of different tests was compared. The prevailing physical acoustics concerned were studied and validated using the Silvaco-Atlas simulator. The main objective is to find a relationship between the electrical parameters degradation to failed physical phenomena caused by impact ionization. The degradation of N-LDMOS performance is tied to the hot carriers (traps) and trapped electrons, which leads to the accumulation of negative charge in the Si/SiO2 interface. More interface states (i.e. important buildup of negative charge) are created at low temperature due to impact ionization phenomenon. This is the reason why the electrical degradations are so high at 10°C.
{"title":"Impact of hot carrier on RF N-LDMOS reliability for radar application after pulsed life test","authors":"M. A. Belaid","doi":"10.1109/scc53769.2021.9768367","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768367","url":null,"abstract":"This Study presents a bench is dedicated to high RF power device lifetime tests under RF pulses for radar application. This bench combined the stress tests (RF, electrical and thermal,) applied to devices and have a direct impact on their lifetime. A complete device electric characterization (I-V, C-V and RF) has been conducted before/after different temperatures (3000 hours at 150° C and 10° C), and material clarifications for the phenomenon of failure, the reliability of different tests was compared. The prevailing physical acoustics concerned were studied and validated using the Silvaco-Atlas simulator. The main objective is to find a relationship between the electrical parameters degradation to failed physical phenomena caused by impact ionization. The degradation of N-LDMOS performance is tied to the hot carriers (traps) and trapped electrons, which leads to the accumulation of negative charge in the Si/SiO2 interface. More interface states (i.e. important buildup of negative charge) are created at low temperature due to impact ionization phenomenon. This is the reason why the electrical degradations are so high at 10°C.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123336000","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 : 2021-12-20DOI: 10.1109/scc53769.2021.9768366
Naji Guedri, Rached Gharbi
Gestures are one of the richest ways of communication that humans have. Therefore, automated hand detection and finger behavior are some of the most compelling challenges in robot vision. Recently, many ideas and technologies have been used in programming to use cameras to recognize the fingers of human hands and apply them to robots. In this paper; the innovative algorithm is based on intelligent ideas and mainly relies on image analysis after camera shooting. In order to identify the fingers of the hand by a camera, the idea is to assign each finger to a percentage in pixels of the binary image, which represents the area of the finger. Each ratio compares to the live image to determine which fingers the user has chosen to control the Allegro Hand robot. Also in this work, the hand can move freely in front of the camera, relying on a new idea of measuring the distance between the hand and the camera. We use for this a small ticket in geometric form square and color different to black and white. This ticket is affixed to the back of the user's hand and through which we can know the size of the hand, regardless of the distance on the Z-axis of the image. This is important in determining the proportions of the fingers according to the distance from the camera. The camera is here combined with a hand human and Allegro Hand to ensure more interactive communication, harmony and easier. The result of the smart camera is tested with multiple experimental trials with a robotic hand. Many finger positions were identified correctly in front of the camera.
{"title":"Finger movements tracking of the human hand using the smart camera to control the Allegro Hand robot","authors":"Naji Guedri, Rached Gharbi","doi":"10.1109/scc53769.2021.9768366","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768366","url":null,"abstract":"Gestures are one of the richest ways of communication that humans have. Therefore, automated hand detection and finger behavior are some of the most compelling challenges in robot vision. Recently, many ideas and technologies have been used in programming to use cameras to recognize the fingers of human hands and apply them to robots. In this paper; the innovative algorithm is based on intelligent ideas and mainly relies on image analysis after camera shooting. In order to identify the fingers of the hand by a camera, the idea is to assign each finger to a percentage in pixels of the binary image, which represents the area of the finger. Each ratio compares to the live image to determine which fingers the user has chosen to control the Allegro Hand robot. Also in this work, the hand can move freely in front of the camera, relying on a new idea of measuring the distance between the hand and the camera. We use for this a small ticket in geometric form square and color different to black and white. This ticket is affixed to the back of the user's hand and through which we can know the size of the hand, regardless of the distance on the Z-axis of the image. This is important in determining the proportions of the fingers according to the distance from the camera. The camera is here combined with a hand human and Allegro Hand to ensure more interactive communication, harmony and easier. The result of the smart camera is tested with multiple experimental trials with a robotic hand. Many finger positions were identified correctly in front of the camera.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121839681","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 : 2021-12-20DOI: 10.1109/scc53769.2021.9768346
Asma Ben Rajab, N. Bahri, M. Ltaief
The present paper deals with a multimodel predictive control for discrete-time nonlinear singularly perturbed systems based on decoupled multimodel structure. For each local model a partial predictive control is synthesized. the weighted sum of these partial controls gives the global control law to be applied to the nonlinear singularly perturbed system. An algorithm is established to synthetisize the adequate multimodel predictive control which garantee to the system the closed-loop desired performances. Simulations results are presented to illustrate the effectiveness of the proposed multimodel predictive control strategy.
{"title":"Decoupled Multimodel Predictive control for Discrete-Time Nonlinear Singularly Perturbed System","authors":"Asma Ben Rajab, N. Bahri, M. Ltaief","doi":"10.1109/scc53769.2021.9768346","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768346","url":null,"abstract":"The present paper deals with a multimodel predictive control for discrete-time nonlinear singularly perturbed systems based on decoupled multimodel structure. For each local model a partial predictive control is synthesized. the weighted sum of these partial controls gives the global control law to be applied to the nonlinear singularly perturbed system. An algorithm is established to synthetisize the adequate multimodel predictive control which garantee to the system the closed-loop desired performances. Simulations results are presented to illustrate the effectiveness of the proposed multimodel predictive control strategy.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131046667","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 : 2021-12-20DOI: 10.1109/scc53769.2021.9768355
Mehdi Hadj Sassi, A. Karoui, M. Ayadi, I. Shahrour
Nowadays the conditions of interior comfort in a workspace has become a serious matter. On the one hand by the owner of the space but above all for his occupants. The question of working conditions takes, now, into counts indoor environmental quality (IEQ). This the question of interior comfort conditions also arises in the field of higher education. Indeed the teaching conditions differs from one method to an other, meaning that the configuration of a classroom, the student’s number and dispatching varies depending on the method used to teach [1]. The main goal of our work is to express and define the comfort in a classroom, depending on the occupant activity, using infield measurement and occupant feedback. This will lead us to know if the local regulation regarding the comfort is in adequation with the real perception of comfort. To achieve that assessment, the IoT played a major role. This study consists of the measurement of various parameters relative to comfort conditions in a classroom, measurement of temperature, humidity, air quality and variations in lighting. Several connected measurement modules devices have been implemented in order to be able to carry out our study. Several scenarios are taken into account, such as the state of lighting, ventilation of the rooms. The outcome of this work will give us a tool allowing us to assess the comfort in different classroom.
{"title":"Design of a Modular System for Measurement of Ambient Environmental Parameters \"MSMAEP\" for indoor environment quality assessment","authors":"Mehdi Hadj Sassi, A. Karoui, M. Ayadi, I. Shahrour","doi":"10.1109/scc53769.2021.9768355","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768355","url":null,"abstract":"Nowadays the conditions of interior comfort in a workspace has become a serious matter. On the one hand by the owner of the space but above all for his occupants. The question of working conditions takes, now, into counts indoor environmental quality (IEQ). This the question of interior comfort conditions also arises in the field of higher education. Indeed the teaching conditions differs from one method to an other, meaning that the configuration of a classroom, the student’s number and dispatching varies depending on the method used to teach [1]. The main goal of our work is to express and define the comfort in a classroom, depending on the occupant activity, using infield measurement and occupant feedback. This will lead us to know if the local regulation regarding the comfort is in adequation with the real perception of comfort. To achieve that assessment, the IoT played a major role. This study consists of the measurement of various parameters relative to comfort conditions in a classroom, measurement of temperature, humidity, air quality and variations in lighting. Several connected measurement modules devices have been implemented in order to be able to carry out our study. Several scenarios are taken into account, such as the state of lighting, ventilation of the rooms. The outcome of this work will give us a tool allowing us to assess the comfort in different classroom.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131756368","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 : 2021-12-20DOI: 10.1109/SCC53769.2021.9796044
K. Bozed, Ahlam Mohammed Elbeskri, Jazia R. Ali Zreg, A. Zerek
Due to the need for different communication types (Voice, video, and data) over the network, vendors improving enterprise networks for this purpose to minimize delays in order to support the better result, some applications like voice considered real-time applications which suffer from delay, jitter and packet losses, This paper discusses comparison of QoS performance between three QoS algorithms (PQ, FIFO, and WFQ), when using MPLS-TE technology considering the VoIP QoS parameters (end to end delay, jitter, and packet loss, as simulation done by OPNET modeler 14.5.
{"title":"Investigation the Performance Effect of QOS in MPLS-TE Network","authors":"K. Bozed, Ahlam Mohammed Elbeskri, Jazia R. Ali Zreg, A. Zerek","doi":"10.1109/SCC53769.2021.9796044","DOIUrl":"https://doi.org/10.1109/SCC53769.2021.9796044","url":null,"abstract":"Due to the need for different communication types (Voice, video, and data) over the network, vendors improving enterprise networks for this purpose to minimize delays in order to support the better result, some applications like voice considered real-time applications which suffer from delay, jitter and packet losses, This paper discusses comparison of QoS performance between three QoS algorithms (PQ, FIFO, and WFQ), when using MPLS-TE technology considering the VoIP QoS parameters (end to end delay, jitter, and packet loss, as simulation done by OPNET modeler 14.5.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114418424","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 : 2021-12-20DOI: 10.1109/scc53769.2021.9768369
S. Mohamed, Cherif Habib, Hasnaoui Othman, B. Jamel
This paper presents an in-depth investigation of the load curve of Tunisian television as well as the power system distribution architecture. The proposed system is based on six transformers, three diesel generators and a park of batteries. The load curves analysis and the energy consumption are discussed. This is an effective tool for carrying out the studies and planning necessary to reduce the electrical energy consumption. In order to classify the loads, the electrical energy consumption is divided in two ways: 1) sensitive loads and 2) normal loads. Real-time measurements of consumption, during four seasons were carried out. As analysis results of sensitive and normal loads, it is recommended to use led lamps for lighting, to integrate a renewable energy production system and to set up an intelligent manager of loads.
{"title":"Electrical Distribution Architecture and Load Curves Analysis of Audiovisual System","authors":"S. Mohamed, Cherif Habib, Hasnaoui Othman, B. Jamel","doi":"10.1109/scc53769.2021.9768369","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768369","url":null,"abstract":"This paper presents an in-depth investigation of the load curve of Tunisian television as well as the power system distribution architecture. The proposed system is based on six transformers, three diesel generators and a park of batteries. The load curves analysis and the energy consumption are discussed. This is an effective tool for carrying out the studies and planning necessary to reduce the electrical energy consumption. In order to classify the loads, the electrical energy consumption is divided in two ways: 1) sensitive loads and 2) normal loads. Real-time measurements of consumption, during four seasons were carried out. As analysis results of sensitive and normal loads, it is recommended to use led lamps for lighting, to integrate a renewable energy production system and to set up an intelligent manager of loads.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121138900","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 : 2021-12-20DOI: 10.1109/scc53769.2021.9768371
Khouloud Elghoul, K. Dehri, R. Ben Abdennour
The major drawback of first sliding mode techniques is the chattering phnonmenon given by the discontinous term especially for the discrete time systems. In this paper and with a view to reduce this phenomenon, new second order sliding mode observer (2-SMO) is proposed. The synthesis of this observer is based on the linear matrix inequalities approach (LMIs). Simulation results verify the theoretic analysis and demonstrate the effectiveness of the proposed observer mainly in precision, speed convergence and reducing of the chattering phenomenon. A comparison study with the classilcal SMO observer confirmed the notable enhancement of performances.
{"title":"A discrete second order sliding mode observer based on LMIs approach","authors":"Khouloud Elghoul, K. Dehri, R. Ben Abdennour","doi":"10.1109/scc53769.2021.9768371","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768371","url":null,"abstract":"The major drawback of first sliding mode techniques is the chattering phnonmenon given by the discontinous term especially for the discrete time systems. In this paper and with a view to reduce this phenomenon, new second order sliding mode observer (2-SMO) is proposed. The synthesis of this observer is based on the linear matrix inequalities approach (LMIs). Simulation results verify the theoretic analysis and demonstrate the effectiveness of the proposed observer mainly in precision, speed convergence and reducing of the chattering phenomenon. A comparison study with the classilcal SMO observer confirmed the notable enhancement of performances.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121388984","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 : 2021-12-20DOI: 10.1109/scc53769.2021.9768339
S. Cornelis, N. Noels, M. Moeneclaey
In downstream spatial multiplexing involving multicarrier modulation using a hybrid precoder, several trade-offs have to be made with respect to the hardware complexity of the analog part of the precoder, the computational complexity of the precoders, and the performance of the communication system. Here, A class of hybrid precoding algorithms with reduced computational complexity is presented, that can be used under various hardware constraints. Our numerical results demonstrate that the proposed precoders allow one to trade off complexity against performance.
{"title":"A class of reduced-complexity hybrid precoding algorithms for MU-MISO OFDM transmission","authors":"S. Cornelis, N. Noels, M. Moeneclaey","doi":"10.1109/scc53769.2021.9768339","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768339","url":null,"abstract":"In downstream spatial multiplexing involving multicarrier modulation using a hybrid precoder, several trade-offs have to be made with respect to the hardware complexity of the analog part of the precoder, the computational complexity of the precoders, and the performance of the communication system. Here, A class of hybrid precoding algorithms with reduced computational complexity is presented, that can be used under various hardware constraints. Our numerical results demonstrate that the proposed precoders allow one to trade off complexity against performance.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131034352","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 : 2021-12-20DOI: 10.1109/scc53769.2021.9768386
T. Garna, A. Telmoudi, H. Messaoud
This paper proposes a new robust predictive control for uncertain nonlinear MIMO systems based on a set of MISO submodels where each is modeled by the 2nd order MISO-GOB-Volterra model, the coefficients of which belong to an orthotopic parameter uncertainty set (PUS). We present the general form of a new predictor and so, we propose an optimization problem formulated as a quadratic programming (QP) under linear and nonlinear constraints with respect to parameter uncertainties. The efficiency of the proposed multivariable robust predictive control approach is validated on an experimental Communicating Two Tank system (CTTS) considered as Two-Input and Two- Output (TITO) system.
{"title":"Robust predictive control for uncertain nonlinear MIMO systems based on MISO Volterra expansion on generalized orthonormal bases","authors":"T. Garna, A. Telmoudi, H. Messaoud","doi":"10.1109/scc53769.2021.9768386","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768386","url":null,"abstract":"This paper proposes a new robust predictive control for uncertain nonlinear MIMO systems based on a set of MISO submodels where each is modeled by the 2nd order MISO-GOB-Volterra model, the coefficients of which belong to an orthotopic parameter uncertainty set (PUS). We present the general form of a new predictor and so, we propose an optimization problem formulated as a quadratic programming (QP) under linear and nonlinear constraints with respect to parameter uncertainties. The efficiency of the proposed multivariable robust predictive control approach is validated on an experimental Communicating Two Tank system (CTTS) considered as Two-Input and Two- Output (TITO) system.","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124155687","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 : 2021-12-20DOI: 10.1109/scc53769.2021.9768361
Raouia Masmoudi Ghodhbane, Lucas Lebailly
This paper focus on the physical layer of a new communication protocol using Orthogonal Frequency Division Multiplexing (OFDM), and its implementation on FPGA mock-up for pressure and temperature sensors application. We implement the design of the OFDM transmitter and receiver blocks. We present an aeronautic sensors application in which a Power Line Communication (PLC) for sensors networks based on OFDM is implemented on FPGA. We show a laboratory test between FPGA connected to several pressure and temperature sensors; and a computer displaying a graphical user interface (GUI).
{"title":"FPGA Implementation of Short Frame OFDM System for Sensors Networks","authors":"Raouia Masmoudi Ghodhbane, Lucas Lebailly","doi":"10.1109/scc53769.2021.9768361","DOIUrl":"https://doi.org/10.1109/scc53769.2021.9768361","url":null,"abstract":"This paper focus on the physical layer of a new communication protocol using Orthogonal Frequency Division Multiplexing (OFDM), and its implementation on FPGA mock-up for pressure and temperature sensors application. We implement the design of the OFDM transmitter and receiver blocks. We present an aeronautic sensors application in which a Power Line Communication (PLC) for sensors networks based on OFDM is implemented on FPGA. We show a laboratory test between FPGA connected to several pressure and temperature sensors; and a computer displaying a graphical user interface (GUI).","PeriodicalId":365845,"journal":{"name":"2021 IEEE 2nd International Conference on Signal, Control and Communication (SCC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124666060","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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