Pub Date : 2014-07-24DOI: 10.1109/AICERA.2014.6908194
C. Nithin, J. Cheriyan
The musical attribute that mostly attracts the listener's attention is the singing voice. The singer's identity serves as a primary aid for people to organize, browse, and retrieve music recordings. Major problems faced by (Singer Identification) SID techniques are that, they will have to deal with music recordings having background accompaniments, requirement of solo or cappella data of all singers which is practically not viable, efficient segmentation of vocal and non-vocal parts in a recording and it will also have to deal with identifying the singer in solo music recordings with background accompaniment. Considering all these challenges a novel method is proposed here, which deals with identifying the vocal parts in the audio signal and removal of background accompaniments. This work also deals with identification of singers in duet recordings using singer specific models.
{"title":"A novel approach to automatic singer identification in duet recordings with background accompaniments","authors":"C. Nithin, J. Cheriyan","doi":"10.1109/AICERA.2014.6908194","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908194","url":null,"abstract":"The musical attribute that mostly attracts the listener's attention is the singing voice. The singer's identity serves as a primary aid for people to organize, browse, and retrieve music recordings. Major problems faced by (Singer Identification) SID techniques are that, they will have to deal with music recordings having background accompaniments, requirement of solo or cappella data of all singers which is practically not viable, efficient segmentation of vocal and non-vocal parts in a recording and it will also have to deal with identifying the singer in solo music recordings with background accompaniment. Considering all these challenges a novel method is proposed here, which deals with identifying the vocal parts in the audio signal and removal of background accompaniments. This work also deals with identification of singers in duet recordings using singer specific models.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134105737","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908191
A. Benny, T. Ruban Deva Prakash
Space vector based pulse density modulation scheme is a control method proposed for multilevel inverter producing octadecogonal space vector. A multilevel inverter is constructed by connecting two level inverter at right end and three level inverter at left end of a three phase transformer winding whose secondary is star connected. This inverter is fed with three different DC voltages possible of generating 18 sided polygon whose vectors are displaced by 20°. Space vector pulse density modulation technique is achieved by comparing the sector and region in which original voltage reference and error voltage resides respectively. As a result of this comparison, optimized switching vector is selected to be applied to multilevel inverter. Output voltage control is achieved by adding zero vectors to the inverter. The proposed scheme results in elimination of lower order harmonics and complicated timing calculations as compared to space vector pulse width modulation. Simulink model and simulation results of the proposed scheme are also discussed.
{"title":"Space vector based pulse density modulation scheme for multilevel inverter control with zero voltage switching","authors":"A. Benny, T. Ruban Deva Prakash","doi":"10.1109/AICERA.2014.6908191","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908191","url":null,"abstract":"Space vector based pulse density modulation scheme is a control method proposed for multilevel inverter producing octadecogonal space vector. A multilevel inverter is constructed by connecting two level inverter at right end and three level inverter at left end of a three phase transformer winding whose secondary is star connected. This inverter is fed with three different DC voltages possible of generating 18 sided polygon whose vectors are displaced by 20°. Space vector pulse density modulation technique is achieved by comparing the sector and region in which original voltage reference and error voltage resides respectively. As a result of this comparison, optimized switching vector is selected to be applied to multilevel inverter. Output voltage control is achieved by adding zero vectors to the inverter. The proposed scheme results in elimination of lower order harmonics and complicated timing calculations as compared to space vector pulse width modulation. Simulink model and simulation results of the proposed scheme are also discussed.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115275479","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908186
G. Krishnan, K. T. Ajmal
In this paper a detailed analysis on torque ripples of brushless dc drives in both commutation and conduction region is given. A neoteric method for the elimination of torque ripples in BLDC motor by employing PWM_ON_PWM scheme has been introduced by the addition of a buck converter in the entrance of the inverter. PWM_ON_PWM strategy is mainly applied to compensate the commutation torque ripples during commutation period caused by commutation current and it cannot entirely remove the torque ripples that are resulted from current introducing in the turn off phase. Closed loop operation using PWM_ON_PWM scheme with buck converter is used for eliminating the ripples in both conduction and commutation region. The duty cycle of PWM is regulated by using wave function of back EMF and for speed regulation PI controller is used. Simulation results are used for revealing circuit validation.
{"title":"A neoteric method based on PWM ON PWM scheme with buck converter for torque ripple minimization in BLDC drive","authors":"G. Krishnan, K. T. Ajmal","doi":"10.1109/AICERA.2014.6908186","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908186","url":null,"abstract":"In this paper a detailed analysis on torque ripples of brushless dc drives in both commutation and conduction region is given. A neoteric method for the elimination of torque ripples in BLDC motor by employing PWM_ON_PWM scheme has been introduced by the addition of a buck converter in the entrance of the inverter. PWM_ON_PWM strategy is mainly applied to compensate the commutation torque ripples during commutation period caused by commutation current and it cannot entirely remove the torque ripples that are resulted from current introducing in the turn off phase. Closed loop operation using PWM_ON_PWM scheme with buck converter is used for eliminating the ripples in both conduction and commutation region. The duty cycle of PWM is regulated by using wave function of back EMF and for speed regulation PI controller is used. Simulation results are used for revealing circuit validation.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123104217","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908185
M. Ganesh, R. Anju, Darsana M. Nair, S. Achu, Deepthy Thomas, Polly Thomas, Deepu E Koshy
All over the world, utilities of electricity and end users of electricity are becoming increasingly concerned about the quality of power. Power quality has become one of the most prolific buzzwords in the electric power industry since the late 1980s because widespread studies on harmonics and its impact. Most of the electrical devices are will fail or will be malfunctioned when exposed to one or more power quality issues. In this paper various reasons for power quality issues are discussed also specially focusing on a new method to minimize distortion with the help of a non critical load. During the entire cycle of operation, the critical load and non critical load are triggered alternatively to compensate the imbalance in the current waveform. Simulation is done using PowerSIM simulation environment. In this paper various reasons for power quality issues are discussed with particular focus on a new method to minimize one of the major causes of distortion. Traditional methods to reduce the causes for power quality issues are mentioned. A new control technique is used to control critical loads. Simulation is done using PowerSIM simulation environment.
{"title":"A novel technique for shaping source current waveform using electronic circuit","authors":"M. Ganesh, R. Anju, Darsana M. Nair, S. Achu, Deepthy Thomas, Polly Thomas, Deepu E Koshy","doi":"10.1109/AICERA.2014.6908185","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908185","url":null,"abstract":"All over the world, utilities of electricity and end users of electricity are becoming increasingly concerned about the quality of power. Power quality has become one of the most prolific buzzwords in the electric power industry since the late 1980s because widespread studies on harmonics and its impact. Most of the electrical devices are will fail or will be malfunctioned when exposed to one or more power quality issues. In this paper various reasons for power quality issues are discussed also specially focusing on a new method to minimize distortion with the help of a non critical load. During the entire cycle of operation, the critical load and non critical load are triggered alternatively to compensate the imbalance in the current waveform. Simulation is done using PowerSIM simulation environment. In this paper various reasons for power quality issues are discussed with particular focus on a new method to minimize one of the major causes of distortion. Traditional methods to reduce the causes for power quality issues are mentioned. A new control technique is used to control critical loads. Simulation is done using PowerSIM simulation environment.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126431160","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908192
H. U. Neenu, J. Cheriyan
Photographs are used to represent real-world events. Today many powerful image editing software's like Gimp, Photoshop etc. are available. Any kind of images can be manipulated by using these software's. Image composition or splicing is one of the important image manipulation technique. Sometimes these manipulated images are provided as evidence in court and this may cause serious problems. So it is important to check whether the images available are forged or not. So based on the challenges of forgery detection here a new method is proposed which incorporates both the illumination inconsistencies and resampling properties for detecting forged images. Illumination inconsistency is due to the fact that while creating a forged image it is difficult to achieve proper illuminant condition for the entire image. Also while creating a forged image it is often necessary to resize certain portions of image and this requires resampling image into a new sampling lattice. This introduces certain resampling properties which can be measured. This technique can be used in medical as well as forensic applications to check the genuinity of images.
{"title":"Image forgery detection based on illumination inconsistencies & intrinsic resampling properties","authors":"H. U. Neenu, J. Cheriyan","doi":"10.1109/AICERA.2014.6908192","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908192","url":null,"abstract":"Photographs are used to represent real-world events. Today many powerful image editing software's like Gimp, Photoshop etc. are available. Any kind of images can be manipulated by using these software's. Image composition or splicing is one of the important image manipulation technique. Sometimes these manipulated images are provided as evidence in court and this may cause serious problems. So it is important to check whether the images available are forged or not. So based on the challenges of forgery detection here a new method is proposed which incorporates both the illumination inconsistencies and resampling properties for detecting forged images. Illumination inconsistency is due to the fact that while creating a forged image it is difficult to achieve proper illuminant condition for the entire image. Also while creating a forged image it is often necessary to resize certain portions of image and this requires resampling image into a new sampling lattice. This introduces certain resampling properties which can be measured. This technique can be used in medical as well as forensic applications to check the genuinity of images.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125421638","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908285
M. Anjana, K. Shinoy, Jeena Joy
Permanent magnet BLDC motor can be designed with different rotor configurations based on the arrangement of the permanent magnets. Rotor configurations strongly influence the performance of permanent magnet electrical machines. The aim of this paper is to compare and evaluate different rotor configurations for PMBLDC motor. Most of the applications prefer surface mounted permanent magnet design due to its ease of construction and maintenance. This paper compares radially magnetized and tangentially magnetized permanent magnet motors. The analysis and comparison of both the configurations are described using a three phase, 36 slot, 8 pole BLDC motor in COMSOL.
{"title":"Comparative analysis of surface mounted and tangentially magnetized permanent magnet BLDC motor using finite element method","authors":"M. Anjana, K. Shinoy, Jeena Joy","doi":"10.1109/AICERA.2014.6908285","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908285","url":null,"abstract":"Permanent magnet BLDC motor can be designed with different rotor configurations based on the arrangement of the permanent magnets. Rotor configurations strongly influence the performance of permanent magnet electrical machines. The aim of this paper is to compare and evaluate different rotor configurations for PMBLDC motor. Most of the applications prefer surface mounted permanent magnet design due to its ease of construction and maintenance. This paper compares radially magnetized and tangentially magnetized permanent magnet motors. The analysis and comparison of both the configurations are described using a three phase, 36 slot, 8 pole BLDC motor in COMSOL.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130714946","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908182
B. Reji, S. Arun, A. Benny
Multilevel converters and inverters are the emerging power conversion technology for distributed energy systems and industrial motor drives. Single phase inverter is widely used for stand-alone systems and micro-grid application. The major problem faced by multilevel inverters are, number of switches required large which leads to higher switching losses. A novel solar powered multilevel dc fed simplified inverter is proposed, in which a single phase multilevel output can be attained using less number of switches. This paper observers the feasibility of the proposed topology using Matlab/Simulink software. A nine level output voltage is obtained with less harmonic content and reduced switching losses.
{"title":"Solar powered multilevel dc fed simplified inverter","authors":"B. Reji, S. Arun, A. Benny","doi":"10.1109/AICERA.2014.6908182","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908182","url":null,"abstract":"Multilevel converters and inverters are the emerging power conversion technology for distributed energy systems and industrial motor drives. Single phase inverter is widely used for stand-alone systems and micro-grid application. The major problem faced by multilevel inverters are, number of switches required large which leads to higher switching losses. A novel solar powered multilevel dc fed simplified inverter is proposed, in which a single phase multilevel output can be attained using less number of switches. This paper observers the feasibility of the proposed topology using Matlab/Simulink software. A nine level output voltage is obtained with less harmonic content and reduced switching losses.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117000023","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908206
J. Agrawal, S. Bodkhe
The paper presents the functional simulation model and performance analysis of permanent magnet synchronous motor (PMSM) drive. The control of PMSM is achieved using vector control technique which provides decoupled control of flux and torque. Using a proportional integral (PI) controller in the speed loop, a closed loop control scheme has been implemented and tested at different operating conditions. The switching functions for inverter are generated with hysteresis and sinusoidal pulse width-modulation (SPWM) current control techniques. In addition, a comparative evaluation of hysteresis and PWM current controller designs is made based upon the magnitude of current ripple and torque pulsation. The validity of proposed models is verified with the help of several informative simulation results in Matlab/Simulink environment.
{"title":"Functional modeling and simulation of inverter fed permanent magnet synchronous motor drive","authors":"J. Agrawal, S. Bodkhe","doi":"10.1109/AICERA.2014.6908206","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908206","url":null,"abstract":"The paper presents the functional simulation model and performance analysis of permanent magnet synchronous motor (PMSM) drive. The control of PMSM is achieved using vector control technique which provides decoupled control of flux and torque. Using a proportional integral (PI) controller in the speed loop, a closed loop control scheme has been implemented and tested at different operating conditions. The switching functions for inverter are generated with hysteresis and sinusoidal pulse width-modulation (SPWM) current control techniques. In addition, a comparative evaluation of hysteresis and PWM current controller designs is made based upon the magnitude of current ripple and torque pulsation. The validity of proposed models is verified with the help of several informative simulation results in Matlab/Simulink environment.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131011656","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908209
M. Shafeeq, Shinto Sebastian
MIMO systems are widely used in several wireless communication systems because it has the ability to provide high reliability and increased capacity without the use of increased transmit power. MIMO systems use space time codes to achieve diversity at both sections of transmitter and receiver. Here the design of MIMO and MISO systems are performed with multicarrier delay diversity modulation techniques which use both cyclic delay diversity and orthogonal frequency division multiplexing (OFDM). Due to the bandwidth efficiency and the ability to reduce multipath effect OFDM is used in several wireless standards. Design and simulation is done in MATLAB using an AWGN channel for BPSK and QPSK modulation schemes to obtain a performance comparison of MISO and MIMO systems in terms of bit error rate.
{"title":"Performance comparison of different multiple input multiple output system","authors":"M. Shafeeq, Shinto Sebastian","doi":"10.1109/AICERA.2014.6908209","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908209","url":null,"abstract":"MIMO systems are widely used in several wireless communication systems because it has the ability to provide high reliability and increased capacity without the use of increased transmit power. MIMO systems use space time codes to achieve diversity at both sections of transmitter and receiver. Here the design of MIMO and MISO systems are performed with multicarrier delay diversity modulation techniques which use both cyclic delay diversity and orthogonal frequency division multiplexing (OFDM). Due to the bandwidth efficiency and the ability to reduce multipath effect OFDM is used in several wireless standards. Design and simulation is done in MATLAB using an AWGN channel for BPSK and QPSK modulation schemes to obtain a performance comparison of MISO and MIMO systems in terms of bit error rate.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134356388","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 : 2014-07-24DOI: 10.1109/AICERA.2014.6908239
Pallav, S. Pandey, V. Laxmi
This paper aims at the development of a proportional integral derivative (PID) controller with a derivative filter coefficient for a magnetic levitation system (MLS), which is a highly nonlinear open loop system. The mathematical modeling of MLS is done using MATLAB/Simulink. The proposed controller simulation results are evaluated with sine wave and step response. The results obtained are also compared with PID controller. The response of the proposed PID controller with derivative filter show better response in comparison to that of conventional PID controller.
{"title":"PID control of magnetic levitation system based on derivative filter","authors":"Pallav, S. Pandey, V. Laxmi","doi":"10.1109/AICERA.2014.6908239","DOIUrl":"https://doi.org/10.1109/AICERA.2014.6908239","url":null,"abstract":"This paper aims at the development of a proportional integral derivative (PID) controller with a derivative filter coefficient for a magnetic levitation system (MLS), which is a highly nonlinear open loop system. The mathematical modeling of MLS is done using MATLAB/Simulink. The proposed controller simulation results are evaluated with sine wave and step response. The results obtained are also compared with PID controller. The response of the proposed PID controller with derivative filter show better response in comparison to that of conventional PID controller.","PeriodicalId":425226,"journal":{"name":"2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122950905","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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