In the transmission from the outdoor environment to indoor, the radio wave is severely attenuated due to the complex indoor environment, which insidiously restricts many applications. The concept of femtocell is proposed to overcome the signal attenuation problem for indoor services. In this paper, we show the baseband design and software-defined radio implementation for Long Term Evolution (LTE) femtocell. We design a universal baseband architecture and efficient signal processing procedure, and adopt powerful multicore digital signal processors (DSPs) to execute these signal processing programs. Our implemented LTE femtocell exhibits a real-time communication ability, which is well verified by some testing procedure described in the paper.
{"title":"Baseband design and software-defined-radio implementation for LTE femtocell","authors":"Dung-Rung Hsieh, De-Jhen Huang, Jen-Yuan Hsu, Chieh-Yu Kao, Ming-Che Lin, Chun-Nan Liu, Pangan Ting","doi":"10.1109/ASCC.2013.6606034","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606034","url":null,"abstract":"In the transmission from the outdoor environment to indoor, the radio wave is severely attenuated due to the complex indoor environment, which insidiously restricts many applications. The concept of femtocell is proposed to overcome the signal attenuation problem for indoor services. In this paper, we show the baseband design and software-defined radio implementation for Long Term Evolution (LTE) femtocell. We design a universal baseband architecture and efficient signal processing procedure, and adopt powerful multicore digital signal processors (DSPs) to execute these signal processing programs. Our implemented LTE femtocell exhibits a real-time communication ability, which is well verified by some testing procedure described in the paper.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"334 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75075939","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 : 2013-06-23DOI: 10.1109/ASCC.2013.6606402
Chao Song, Jinde Cao
This paper studies the consensus control problem for a group of fractional-order linear multi-agent systems (MAS) with directed interaction topology when the fractional order α satisfies 0 <; α <; 2, by transforming it into the stability of a set of matrices. Based on the stability theory of fractional-order system, some sufficient and necessary conditions are presented to ensure the consensus of MAS in terms of linear matrix inequalities, and the feedback matrix of the proposed protocol is also determined accordingly.
{"title":"Consensus of fractional-order linear systems","authors":"Chao Song, Jinde Cao","doi":"10.1109/ASCC.2013.6606402","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606402","url":null,"abstract":"This paper studies the consensus control problem for a group of fractional-order linear multi-agent systems (MAS) with directed interaction topology when the fractional order α satisfies 0 <; α <; 2, by transforming it into the stability of a set of matrices. Based on the stability theory of fractional-order system, some sufficient and necessary conditions are presented to ensure the consensus of MAS in terms of linear matrix inequalities, and the feedback matrix of the proposed protocol is also determined accordingly.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"70 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77852682","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 : 2013-06-23DOI: 10.1109/ASCC.2013.6606393
M. A. Khanesar, E. Kayacan, O. Kaynak, W. Saeys
Several papers claim that the performance of the type-2 fuzzy logic systems is superior over their type-1 counterparts, especially under noisy conditions. In order to show the effectiveness of the noise reduction capabilities of the type-2 fuzzy logic systems, a novel type-2 fuzzy membership function, ellipsoidal membership function, has recently been proposed. The novel membership function has certain values on both ends of the support and the kernel, and some uncertain values on the other values of the support. The parameters responsible for the width of uncertainty are decoupled from the parameters responsible for the center and the support of the membership function. In this study, a sliding mode control theory based learning algorithm has been proposed to tune the consequent part parameters tuning of the ellipsoidal type-2 fuzzy membership functions. The applicability of the novel membership function with the proposed novel parameter update rules has been shown on the control of a 2DOF robotic arm. The simulation results show that the type-2 fuzzy neural networks working in parallel with conventional PD controllers have the ability of controlling the robotic arm with a high accuracy especially under noisy conditions.
{"title":"Sliding mode type-2 fuzzy control of robotic arm using ellipsoidal membership functions","authors":"M. A. Khanesar, E. Kayacan, O. Kaynak, W. Saeys","doi":"10.1109/ASCC.2013.6606393","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606393","url":null,"abstract":"Several papers claim that the performance of the type-2 fuzzy logic systems is superior over their type-1 counterparts, especially under noisy conditions. In order to show the effectiveness of the noise reduction capabilities of the type-2 fuzzy logic systems, a novel type-2 fuzzy membership function, ellipsoidal membership function, has recently been proposed. The novel membership function has certain values on both ends of the support and the kernel, and some uncertain values on the other values of the support. The parameters responsible for the width of uncertainty are decoupled from the parameters responsible for the center and the support of the membership function. In this study, a sliding mode control theory based learning algorithm has been proposed to tune the consequent part parameters tuning of the ellipsoidal type-2 fuzzy membership functions. The applicability of the novel membership function with the proposed novel parameter update rules has been shown on the control of a 2DOF robotic arm. The simulation results show that the type-2 fuzzy neural networks working in parallel with conventional PD controllers have the ability of controlling the robotic arm with a high accuracy especially under noisy conditions.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"10 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79117063","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 : 2013-06-23DOI: 10.1109/ASCC.2013.6606297
M. Rahman, P. Archambault, M. Saad, C. Ochoa-Luna, S. Ferrer
This paper presents a robot aided passive arm movement therapeutic scheme. A seven DoFs robot, ETS-MARSE (motion assistive exoskeleton robot for superior extremity) was used for this purpose. It is an exoskeleton type wearable robot, which was designed corresponds to human upper-limb biomechanics, to provide movement assistance and rehabilitation to the individuals with upper limb dysfunction due to conditions such as stroke or spinal cord injuries. Considering the dynamic modeling of the exoskeleton which is nonlinear in nature, we have employed nonlinear control techniques (sliding mode and computed torque) to maneuver the exoskeleton. Experiments were carried out with healthy male human subjects where trajectories tracking in the form of passive rehabilitation exercises were performed.
{"title":"Robot aided passive rehabilitation using nonlinear control techniques","authors":"M. Rahman, P. Archambault, M. Saad, C. Ochoa-Luna, S. Ferrer","doi":"10.1109/ASCC.2013.6606297","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606297","url":null,"abstract":"This paper presents a robot aided passive arm movement therapeutic scheme. A seven DoFs robot, ETS-MARSE (motion assistive exoskeleton robot for superior extremity) was used for this purpose. It is an exoskeleton type wearable robot, which was designed corresponds to human upper-limb biomechanics, to provide movement assistance and rehabilitation to the individuals with upper limb dysfunction due to conditions such as stroke or spinal cord injuries. Considering the dynamic modeling of the exoskeleton which is nonlinear in nature, we have employed nonlinear control techniques (sliding mode and computed torque) to maneuver the exoskeleton. Experiments were carried out with healthy male human subjects where trajectories tracking in the form of passive rehabilitation exercises were performed.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"10 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81422951","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 : 2013-06-23DOI: 10.1109/ASCC.2013.6606388
E. Kayacan, E. Kayacan, H. Ramon, W. Saeys
This study deals with the yaw dynamics modeling and identification of an autonomous tractor. First, three different yaw dynamics models are developed considering various types of soil conditions. In these model derivations, the relaxation length is considered to calculate the tire side-slip angles for the two models, and the linear model is used to calculate the lateral forces on the tires for all the models. Then, to determine the most appropriate model for the autonomous tractor at hand, frequency domain identification method is preferred. After checking the level of nonlinearities of the steering mechanism and the yaw dynamics by using an odd-odd multisine signal as the excitation, these systems are identified by using maximum likelihood frequency domain identification method. The identifications results show that the two derived models among the three different models have the ability of identifying the yaw dynamics accurately. As a simpler model, an empirical second order model gives also reasonable identification results for the tractor at hand.
{"title":"Modeling and identification of the yaw dynamics of an autonomous tractor","authors":"E. Kayacan, E. Kayacan, H. Ramon, W. Saeys","doi":"10.1109/ASCC.2013.6606388","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606388","url":null,"abstract":"This study deals with the yaw dynamics modeling and identification of an autonomous tractor. First, three different yaw dynamics models are developed considering various types of soil conditions. In these model derivations, the relaxation length is considered to calculate the tire side-slip angles for the two models, and the linear model is used to calculate the lateral forces on the tires for all the models. Then, to determine the most appropriate model for the autonomous tractor at hand, frequency domain identification method is preferred. After checking the level of nonlinearities of the steering mechanism and the yaw dynamics by using an odd-odd multisine signal as the excitation, these systems are identified by using maximum likelihood frequency domain identification method. The identifications results show that the two derived models among the three different models have the ability of identifying the yaw dynamics accurately. As a simpler model, an empirical second order model gives also reasonable identification results for the tractor at hand.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"8 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84584835","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 : 2013-06-23DOI: 10.1109/ASCC.2013.6606386
Seyyed Hamid R. Ebrahimi Motlagh, H. Moradi, H. Pouretemad
Early detection of autism is crucial for successfully dealing with it and reduce/eliminate its effects. In other words, early treatment can make a big difference in the lives of many children with this disorder. Consequently, in this study the pattern recognition algorithms are used to determine the unique features of the voice of autistic children to distinguish between the autistic children and normal children between ages 2 and 3. These descriptors extract various audio features such as temporal features, energy features, harmonic features, perceptual and spectral features. Two feature selection methods are used and the results are compared. One method is based on comparing the effect of using all of a group features together and another method compares the effect of using features one by one. The selected features are used to classify selected children into autistic and non-autistic ones. The results show 96.17 percent accuracy. After feature selection, we classified data using S.V.M classifier for recognizing two types of input data.
{"title":"Using general sound descriptors for early autism detection","authors":"Seyyed Hamid R. Ebrahimi Motlagh, H. Moradi, H. Pouretemad","doi":"10.1109/ASCC.2013.6606386","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606386","url":null,"abstract":"Early detection of autism is crucial for successfully dealing with it and reduce/eliminate its effects. In other words, early treatment can make a big difference in the lives of many children with this disorder. Consequently, in this study the pattern recognition algorithms are used to determine the unique features of the voice of autistic children to distinguish between the autistic children and normal children between ages 2 and 3. These descriptors extract various audio features such as temporal features, energy features, harmonic features, perceptual and spectral features. Two feature selection methods are used and the results are compared. One method is based on comparing the effect of using all of a group features together and another method compares the effect of using features one by one. The selected features are used to classify selected children into autistic and non-autistic ones. The results show 96.17 percent accuracy. After feature selection, we classified data using S.V.M classifier for recognizing two types of input data.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85757984","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 : 2013-06-23DOI: 10.1109/ASCC.2013.6606075
S. Mekhilef, M. Kadir
This paper presents a three-stage eighteen-level inverter design with a novel control method. The inverter consists of a series connected main high-voltage, medium-voltage and low-voltage stages. The high voltage stage is made of a three-phase, six-switch conventional inverter. The medium and low voltage stages are made of three-level inverters constructed by H-bridge units. The proposed control strategy assumes a reference input voltage vector and aims to operate the inverter in one state per sampling time to produce the nearest vector to that reference. The control concept is based on representing the reference voltage in 60°-spaced two axis coordinate system. In this system, the inverter vectors' dimensions are integer multiples of the inverter's dc voltage and the expression of the inverter's vectors in terms of its switching variables is straightforward. Consequently, the switching signals can be obtained by simple fixed-point calculations. The approach of the proposed control strategy has been presented, the transformed inverter vectors and their relation to the switching variables have been defined, and the implementation process has been described. The test results verify the effectiveness of the proposed strategy in terms of computational efficiency as well as the capability of the inverter to produce very low distorted voltage with low switching losses.
{"title":"Novel voltage control of 18 level multilevel inverter","authors":"S. Mekhilef, M. Kadir","doi":"10.1109/ASCC.2013.6606075","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606075","url":null,"abstract":"This paper presents a three-stage eighteen-level inverter design with a novel control method. The inverter consists of a series connected main high-voltage, medium-voltage and low-voltage stages. The high voltage stage is made of a three-phase, six-switch conventional inverter. The medium and low voltage stages are made of three-level inverters constructed by H-bridge units. The proposed control strategy assumes a reference input voltage vector and aims to operate the inverter in one state per sampling time to produce the nearest vector to that reference. The control concept is based on representing the reference voltage in 60°-spaced two axis coordinate system. In this system, the inverter vectors' dimensions are integer multiples of the inverter's dc voltage and the expression of the inverter's vectors in terms of its switching variables is straightforward. Consequently, the switching signals can be obtained by simple fixed-point calculations. The approach of the proposed control strategy has been presented, the transformed inverter vectors and their relation to the switching variables have been defined, and the implementation process has been described. The test results verify the effectiveness of the proposed strategy in terms of computational efficiency as well as the capability of the inverter to produce very low distorted voltage with low switching losses.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"75 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80917863","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 : 2013-06-23DOI: 10.1109/ASCC.2013.6606203
Chang Tan, G. Tao, X. Yao, B. Jiang
In a recent paper [7], a multiple-model adaptive actuator failure compensation control scheme is proposed for the control of a near-space vehicle, using the gradient algorithm, to achieve fast and accurate actuator failures compensation. In this paper, a new multiple-model adaptive actuator failure compensation control scheme is developed for nonlinear systems motivated from a near-space vehicle control application. Such a design also employs multiple controllers based on multiple-model failure estimations and a control switching mechanism, based on finding the minimal performance cost index, to select the most appropriate controller. Different from [7], each estimator is designed based on the Lyapunov method, which ensures the system stability and desired tracking properties. Moreover, a smooth control are introduced to the multiple-model control system frame to avoid the discontinuity problem from the control switching, to widen the application of such design. Simulation results for a near-space vehicle dynamic model are presented to show the desired failure compensation performance.
{"title":"A Lyapunov method based multiple-model adaptive actuator failure compensation scheme for control of near-space vehicles","authors":"Chang Tan, G. Tao, X. Yao, B. Jiang","doi":"10.1109/ASCC.2013.6606203","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606203","url":null,"abstract":"In a recent paper [7], a multiple-model adaptive actuator failure compensation control scheme is proposed for the control of a near-space vehicle, using the gradient algorithm, to achieve fast and accurate actuator failures compensation. In this paper, a new multiple-model adaptive actuator failure compensation control scheme is developed for nonlinear systems motivated from a near-space vehicle control application. Such a design also employs multiple controllers based on multiple-model failure estimations and a control switching mechanism, based on finding the minimal performance cost index, to select the most appropriate controller. Different from [7], each estimator is designed based on the Lyapunov method, which ensures the system stability and desired tracking properties. Moreover, a smooth control are introduced to the multiple-model control system frame to avoid the discontinuity problem from the control switching, to widen the application of such design. Simulation results for a near-space vehicle dynamic model are presented to show the desired failure compensation performance.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"38 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81156870","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 : 2013-06-23DOI: 10.1109/ASCC.2013.6606172
U. Tasdelen, H. Özbay
A new Smith predictor based controller is proposed for systems with integral action and flexible modes under input-output time-delay. The design uses controller parametrization and aims to achieve a set of performance and robustness objectives. Compared to existing Smith predictor based designs, disturbance attenuation property is improved, with respect to periodic disturbances at a known frequency. A two-degree of freedom controller structure is shown to be helpful in shaping the transient response under constant reference inputs. Stability robustness properties of this system are also investigated. Simulation results demonstrate the effectiveness of the proposed controller.
{"title":"On Smith predictor-based controller design for systems with integral action and time delay","authors":"U. Tasdelen, H. Özbay","doi":"10.1109/ASCC.2013.6606172","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606172","url":null,"abstract":"A new Smith predictor based controller is proposed for systems with integral action and flexible modes under input-output time-delay. The design uses controller parametrization and aims to achieve a set of performance and robustness objectives. Compared to existing Smith predictor based designs, disturbance attenuation property is improved, with respect to periodic disturbances at a known frequency. A two-degree of freedom controller structure is shown to be helpful in shaping the transient response under constant reference inputs. Stability robustness properties of this system are also investigated. Simulation results demonstrate the effectiveness of the proposed controller.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"154 1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79535631","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 : 2013-06-23DOI: 10.1109/ASCC.2013.6606295
Alejandro I. Maass, Eduardo I. Silva
This paper presents performance limitations in the control of single-input linear time-invariant (LTI) plants when controlled over a fading channel. Our main result is a closed form characterization of the minimal stationary plant output variance, as an explicit function of channel statistics and plant characteristics. To derive our results, we first show that there exists an equivalence, in a second order moment sense, between a fading channel and an additive white noise channel subject to a stationary SNR constraint. Such equivalence is then exploited to state conditions for stabilization, and to derive explicit performance limitations, as immediate corollaries of known results in the literature on networked control subject to SNR constraints.
{"title":"Performance limitations in the control of LTI plants over fading channels","authors":"Alejandro I. Maass, Eduardo I. Silva","doi":"10.1109/ASCC.2013.6606295","DOIUrl":"https://doi.org/10.1109/ASCC.2013.6606295","url":null,"abstract":"This paper presents performance limitations in the control of single-input linear time-invariant (LTI) plants when controlled over a fading channel. Our main result is a closed form characterization of the minimal stationary plant output variance, as an explicit function of channel statistics and plant characteristics. To derive our results, we first show that there exists an equivalence, in a second order moment sense, between a fading channel and an additive white noise channel subject to a stationary SNR constraint. Such equivalence is then exploited to state conditions for stabilization, and to derive explicit performance limitations, as immediate corollaries of known results in the literature on networked control subject to SNR constraints.","PeriodicalId":6304,"journal":{"name":"2013 9th Asian Control Conference (ASCC)","volume":"65 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2013-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84144784","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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