Pub Date : 2021-03-22DOI: 10.1109/SSD52085.2021.9429373
Mohammed S. Khesbak
Detecting small-size obstacle objects in an autonomous vehicle or robot driving is considered an important issue in collision avoidance especially in applications such as robot navigation or vehicle parking. In this paper, an effort is made to evaluate the distance detection fusion of a target away from two uncorrelated, different technology sensors. The Robot Operating System framework is used to manage data collection between the two sensors and the python software engine. The negative behavior of the single-pixel distance detection of the depth camera was concluded according to the measurement tests creating a plausibility problem for the obstacle detection process as a fused sensor. A solution is also proposed in this paper to overcome this problem using center pixel averaging. The plausibility check algorithm was successfully proposed and tested practically detecting the implausible distance measurements.
{"title":"Depth Camera and Laser Sensors Plausibility Evaluation for Small Size Obstacle Detection","authors":"Mohammed S. Khesbak","doi":"10.1109/SSD52085.2021.9429373","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429373","url":null,"abstract":"Detecting small-size obstacle objects in an autonomous vehicle or robot driving is considered an important issue in collision avoidance especially in applications such as robot navigation or vehicle parking. In this paper, an effort is made to evaluate the distance detection fusion of a target away from two uncorrelated, different technology sensors. The Robot Operating System framework is used to manage data collection between the two sensors and the python software engine. The negative behavior of the single-pixel distance detection of the depth camera was concluded according to the measurement tests creating a plausibility problem for the obstacle detection process as a fused sensor. A solution is also proposed in this paper to overcome this problem using center pixel averaging. The plausibility check algorithm was successfully proposed and tested practically detecting the implausible distance measurements.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"106 1","pages":"625-631"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80954839","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 : 2021-03-22DOI: 10.1109/SSD52085.2021.9429436
Abdallah Adawy, Ghada Bouattour, M. Ibbini, N. Derbel, O. Kanoun
Sliding mode control (SMC) is used to regulate the output power of an inductive power transfer (IPT) system with maximum efficiency tracking. Load variations and misalignment are the main factors that affect the output power and efficiency of the system. For that, SMC is used on the transmitter side to track the minimum input current in order to realize the maximum efficiency by regulating the duty cycle of the DC-DC boost converter connected to the power supply. However, SMC is used to access the desired output voltage by controlling the DC-DC boost converter connected to the load on the receiving side. Different control techniques that the SMC proposes are exploited on the sending and receiving side to achieve the desired output. SMC is also compared with the PI control technique. It introduces more efficiency and output power with variable load and coupling factor. Simulation results illustrate that the desired output voltage is achieved with different loads and different input voltages with 76% system efficiency. Moreover, the maximum efficiency has been achieved when the coupling factor is 0.7, while the maximum input power is achieved when the coupling factor is 0.1.
{"title":"Sliding Mode Control of an Inductive Power Transmission System with Maximum Efficiency","authors":"Abdallah Adawy, Ghada Bouattour, M. Ibbini, N. Derbel, O. Kanoun","doi":"10.1109/SSD52085.2021.9429436","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429436","url":null,"abstract":"Sliding mode control (SMC) is used to regulate the output power of an inductive power transfer (IPT) system with maximum efficiency tracking. Load variations and misalignment are the main factors that affect the output power and efficiency of the system. For that, SMC is used on the transmitter side to track the minimum input current in order to realize the maximum efficiency by regulating the duty cycle of the DC-DC boost converter connected to the power supply. However, SMC is used to access the desired output voltage by controlling the DC-DC boost converter connected to the load on the receiving side. Different control techniques that the SMC proposes are exploited on the sending and receiving side to achieve the desired output. SMC is also compared with the PI control technique. It introduces more efficiency and output power with variable load and coupling factor. Simulation results illustrate that the desired output voltage is achieved with different loads and different input voltages with 76% system efficiency. Moreover, the maximum efficiency has been achieved when the coupling factor is 0.7, while the maximum input power is achieved when the coupling factor is 0.1.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"1 1","pages":"998-1003"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80107736","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 : 2021-03-22DOI: 10.1109/SSD52085.2021.9429527
Hajer Faris Fadhel, M. K. Mahmood, Osama Al-Omari
Wireless Sensor Networks (WSNs) are deployed over a specific area to monitor a range of environmental and physical phenomena. WSNs are known by their limitation in term of energy, memory, and computing capability. Therefore, these sensors need effective wireless communication protocols in terms of energy efficiency, ease of deployment, and low latency. LEACH is the principle routing algorithm adopted today for WSN data transmission. It is the origin of a variety of self-organizing clustering-based routing protocol. Data communication is the main source of energy losses beside but to a lesser extent data processing. The actual research is a step by step follow of LEACH focusing into the energy dissipation in various stages. The simulation of the protocol is accomplished through a MATLAB implementation to clarify the dissipation process. Nodes die after the residual energy has reached a minimum allowed threshold necessary for sensor functionality as part of the WSN. LEACH shows good performances but requires improvement in the cluster head selection stage by the use optimization techniques.
{"title":"A Comprehensive Analysis of Energy Dissipation in LEACH Protocol for Wireless Sensor Networks","authors":"Hajer Faris Fadhel, M. K. Mahmood, Osama Al-Omari","doi":"10.1109/SSD52085.2021.9429527","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429527","url":null,"abstract":"Wireless Sensor Networks (WSNs) are deployed over a specific area to monitor a range of environmental and physical phenomena. WSNs are known by their limitation in term of energy, memory, and computing capability. Therefore, these sensors need effective wireless communication protocols in terms of energy efficiency, ease of deployment, and low latency. LEACH is the principle routing algorithm adopted today for WSN data transmission. It is the origin of a variety of self-organizing clustering-based routing protocol. Data communication is the main source of energy losses beside but to a lesser extent data processing. The actual research is a step by step follow of LEACH focusing into the energy dissipation in various stages. The simulation of the protocol is accomplished through a MATLAB implementation to clarify the dissipation process. Nodes die after the residual energy has reached a minimum allowed threshold necessary for sensor functionality as part of the WSN. LEACH shows good performances but requires improvement in the cluster head selection stage by the use optimization techniques.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"22 1","pages":"53-57"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80373539","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 : 2021-03-22DOI: 10.1109/SSD52085.2021.9429415
Saifeddine Ben Nasr, Imen Messaoudi, A. Oueslati, Z. Lachiri
One of the sharply increasing incidence rate diseases, is the intestinal cancer. Detecting and identifying this disease is very difficult since it is a type of internal cancer that may not cause symptoms. Early detection of bowel cancer saves effort, minimizes diagnostic time, and helps target the best treatment to increase the cure rate. Many deep learning systems are being produced to help physicians diagnose bowel cancer early. These systems use several types of data such as histopathological images. In this article, we propose a new method of classifying intestinal cancer readings and non-pathological lesions. This method is based on the use of a deep learning network CNN (convolutional neural network). As training data, we use the SNP protein sequences of APC gene which is located at q22.2 on the human chromosome 5. SNP sequences are transformed from textual form to scalogram images then presented on different color spaces to create three databases. In order to evaluate this technique, we use quantitative measures such as: accuracy, sensitivity, specificity and precision. The obtained values are respectively 96.19%, 97.42%, 85.46% and 98.32%. These results show the performance of the proposed method and confirm the relationship between small protein changes at the SNP level of APC gene and intestinal cancer.
{"title":"CNN model applied on SNP protein sequences for intestinal cancer early detection","authors":"Saifeddine Ben Nasr, Imen Messaoudi, A. Oueslati, Z. Lachiri","doi":"10.1109/SSD52085.2021.9429415","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429415","url":null,"abstract":"One of the sharply increasing incidence rate diseases, is the intestinal cancer. Detecting and identifying this disease is very difficult since it is a type of internal cancer that may not cause symptoms. Early detection of bowel cancer saves effort, minimizes diagnostic time, and helps target the best treatment to increase the cure rate. Many deep learning systems are being produced to help physicians diagnose bowel cancer early. These systems use several types of data such as histopathological images. In this article, we propose a new method of classifying intestinal cancer readings and non-pathological lesions. This method is based on the use of a deep learning network CNN (convolutional neural network). As training data, we use the SNP protein sequences of APC gene which is located at q22.2 on the human chromosome 5. SNP sequences are transformed from textual form to scalogram images then presented on different color spaces to create three databases. In order to evaluate this technique, we use quantitative measures such as: accuracy, sensitivity, specificity and precision. The obtained values are respectively 96.19%, 97.42%, 85.46% and 98.32%. These results show the performance of the proposed method and confirm the relationship between small protein changes at the SNP level of APC gene and intestinal cancer.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"27 2 1","pages":"255-263"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77229725","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 : 2021-03-22DOI: 10.1109/SSD52085.2021.9429492
Sophie Gedicke, O. Welz, J. Hofbauer, Mathias Rudolph
Establishing and controlling of smart decentralized grids represents a challenging task for future modern energy networks. Therefore, it is necessary to examine fundamental system behavior. One promising way to address this topic is to model technical systems consisting of energy producer, -storage and – consumer in a decentralized network. The following approach presents a generic model for the computer-aided simulation of thermal and energetic behavior of technical systems.
{"title":"A generic model for the simulation of the thermal and energetic behaviour of technical systems","authors":"Sophie Gedicke, O. Welz, J. Hofbauer, Mathias Rudolph","doi":"10.1109/SSD52085.2021.9429492","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429492","url":null,"abstract":"Establishing and controlling of smart decentralized grids represents a challenging task for future modern energy networks. Therefore, it is necessary to examine fundamental system behavior. One promising way to address this topic is to model technical systems consisting of energy producer, -storage and – consumer in a decentralized network. The following approach presents a generic model for the computer-aided simulation of thermal and energetic behavior of technical systems.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"47 1","pages":"705-711"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82125959","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 : 2021-03-22DOI: 10.1109/SSD52085.2021.9429324
Ahcene Hamoudi, N. Djeghali, M. Bettayeb
This paper presents a synchronisation method of nonlinear chaotic systems using Takagi-Sugeno representation with unmeasurable premise variables. An extended PI observer with unknown input is designed to achieve the synchronisation objective. The proposed PI observer estimates both the states and the unknown input. The convergence of the PI observer is established in an LMI formulation framework. An application to speech encryption and decryption is performed to illustrate the efficiency of the proposed approach.
{"title":"Speech encryption based on synchronisation of chaotic Takagi-Sugeno systems using PI observer","authors":"Ahcene Hamoudi, N. Djeghali, M. Bettayeb","doi":"10.1109/SSD52085.2021.9429324","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429324","url":null,"abstract":"This paper presents a synchronisation method of nonlinear chaotic systems using Takagi-Sugeno representation with unmeasurable premise variables. An extended PI observer with unknown input is designed to achieve the synchronisation objective. The proposed PI observer estimates both the states and the unknown input. The convergence of the PI observer is established in an LMI formulation framework. An application to speech encryption and decryption is performed to illustrate the efficiency of the proposed approach.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"37 1","pages":"1285-1290"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78866467","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 : 2021-03-22DOI: 10.1109/SSD52085.2021.9429337
Faouzi Tlili, F. Bacha
This paper discusses two control strategies applied to a grid-connected solar PV system. Taking into account that the proposed conversion chain consists of a photovoltaic generator, an adaptation stage composed of a boost dc/dc converter associated in series with a three phase dc/ac converter and the grid. In particular, the maximum power point tracking (MPPT) approach based on P&O is devoted to the boost converter. However, the hysteresis current control is dedicated to the three phase dc/ac converter. Consequently, so as to achieve a feasibility of these two techniques, the author resorted to the Matlab/Simulink environment to carried out the necessary simulations. In other hand, the experimental results have been carried out with help a Dspace card accompanied with the conversion chain, PV module and the grid.
{"title":"Hysteresis Current Control & MPPT Approach Applied to a Grid — Connected Solar PV System","authors":"Faouzi Tlili, F. Bacha","doi":"10.1109/SSD52085.2021.9429337","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429337","url":null,"abstract":"This paper discusses two control strategies applied to a grid-connected solar PV system. Taking into account that the proposed conversion chain consists of a photovoltaic generator, an adaptation stage composed of a boost dc/dc converter associated in series with a three phase dc/ac converter and the grid. In particular, the maximum power point tracking (MPPT) approach based on P&O is devoted to the boost converter. However, the hysteresis current control is dedicated to the three phase dc/ac converter. Consequently, so as to achieve a feasibility of these two techniques, the author resorted to the Matlab/Simulink environment to carried out the necessary simulations. In other hand, the experimental results have been carried out with help a Dspace card accompanied with the conversion chain, PV module and the grid.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"6 1","pages":"1399-1404"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78912103","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 : 2021-03-22DOI: 10.1109/SSD52085.2021.9429329
A. Ammar, Hana Ben Fredj, C. Souani
Motion estimation is considered among the most famous and important applications in the field of computer vision. Indeed, in the last decade, the optical flow has become an alternative technique to estimate motion on successive frames. However, dense and precise estimates of the optical flow are usually costly in computing time. In this context, our approach is focused upon calculating the moving object's optical flow through the use of the Lucas-Kanade algorithm in real time which is implemented into Raspberry Pi 4. The efficiency of our real time implementation is demonstrated by the experimental results, hence showing better performances in comparison with the conventional calculation.
{"title":"An efficient Real Time Implementation of Motion Estimation in Video Sequences on SOC","authors":"A. Ammar, Hana Ben Fredj, C. Souani","doi":"10.1109/SSD52085.2021.9429329","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429329","url":null,"abstract":"Motion estimation is considered among the most famous and important applications in the field of computer vision. Indeed, in the last decade, the optical flow has become an alternative technique to estimate motion on successive frames. However, dense and precise estimates of the optical flow are usually costly in computing time. In this context, our approach is focused upon calculating the moving object's optical flow through the use of the Lucas-Kanade algorithm in real time which is implemented into Raspberry Pi 4. The efficiency of our real time implementation is demonstrated by the experimental results, hence showing better performances in comparison with the conventional calculation.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"21 1","pages":"1032-1037"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88349445","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 : 2021-03-22DOI: 10.1109/SSD52085.2021.9429314
Imen Iben Ammar, H. Gassara, A. Hajjaji, M. Chaabane
A novel approach is proposed to design a robust observer for a class of positive polynomial fuzzy models. To study the considered analysis and design problems, a line-integral polynomial fuzzy Lyapunov function with polynomial terms depending of the estimated states is proposed. The proposed design conditions of the positive polynomial fuzzy controllers guaranteeing both the stability and the non negativeness of the estimated states, are solved using Sum of Squares(SOS) approach. Finally, simulations examples are given to show the effectiveness of the proposed approach.
{"title":"Robust Polynomial Observers For Positive Polynomial Fuzzy Systems","authors":"Imen Iben Ammar, H. Gassara, A. Hajjaji, M. Chaabane","doi":"10.1109/SSD52085.2021.9429314","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429314","url":null,"abstract":"A novel approach is proposed to design a robust observer for a class of positive polynomial fuzzy models. To study the considered analysis and design problems, a line-integral polynomial fuzzy Lyapunov function with polynomial terms depending of the estimated states is proposed. The proposed design conditions of the positive polynomial fuzzy controllers guaranteeing both the stability and the non negativeness of the estimated states, are solved using Sum of Squares(SOS) approach. Finally, simulations examples are given to show the effectiveness of the proposed approach.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"20 1","pages":"1314-1321"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83160886","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 : 2021-03-22DOI: 10.1109/SSD52085.2021.9429490
Essia Added, H. Gritli, S. Belghith
In this paper, we are interested in the analysis of the passive walking gaits of the compass-type bipedal robot while descending sloped surfaces. This type of biped robot is a two-degree-freedom mechanical system characterized by an impulsive hybrid dynamics that brings out attractive nonlinear phenomena like chaos and different types of bifurcations. In this work, we investigate by means of bifurcation diagrams, the influence of certain parameters on the passive motion of bipedal robot. As a result, we show the exhibition of new complex walking behaviors emerged from different types of bifurcations such as the period-doubling bifurcation and the Neimark-Sacker bifurcation, and also emerged via the period-remerging scenario. These results further confirm the complexity of the biped/human walk.
{"title":"Further Analysis of the Passive Walking Gaits of the Compass Biped Robot: Bifurcations and Chaos","authors":"Essia Added, H. Gritli, S. Belghith","doi":"10.1109/SSD52085.2021.9429490","DOIUrl":"https://doi.org/10.1109/SSD52085.2021.9429490","url":null,"abstract":"In this paper, we are interested in the analysis of the passive walking gaits of the compass-type bipedal robot while descending sloped surfaces. This type of biped robot is a two-degree-freedom mechanical system characterized by an impulsive hybrid dynamics that brings out attractive nonlinear phenomena like chaos and different types of bifurcations. In this work, we investigate by means of bifurcation diagrams, the influence of certain parameters on the passive motion of bipedal robot. As a result, we show the exhibition of new complex walking behaviors emerged from different types of bifurcations such as the period-doubling bifurcation and the Neimark-Sacker bifurcation, and also emerged via the period-remerging scenario. These results further confirm the complexity of the biped/human walk.","PeriodicalId":6799,"journal":{"name":"2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)","volume":"1 1","pages":"160-165"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83722300","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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