Pub Date : 2008-07-20DOI: 10.1109/SSD.2008.4632820
B. Kumar, T. S. Arora
In a host of signal processing situations, the desired (ideal) frequency response of the filter is a rational function H(omega) =1/(jomega) (a digital integrator). In such cases, IIR filters can be exploited but at the sacrifice of linearity of phase response. However, FIR structures are preferred to the IIR ones due to wellknown advantages of the former. We may also essentially require the FIR filter with its magnitude response having maximal flatness at omega=pi/2.
{"title":"Efficient computation of universal weights for maximally flat (atπ /2) linear -phase integrators of various degrees","authors":"B. Kumar, T. S. Arora","doi":"10.1109/SSD.2008.4632820","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632820","url":null,"abstract":"In a host of signal processing situations, the desired (ideal) frequency response of the filter is a rational function H(omega) =1/(jomega) (a digital integrator). In such cases, IIR filters can be exploited but at the sacrifice of linearity of phase response. However, FIR structures are preferred to the IIR ones due to wellknown advantages of the former. We may also essentially require the FIR filter with its magnitude response having maximal flatness at omega=pi/2.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129509623","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 : 2008-07-20DOI: 10.1109/SSD.2008.4632869
A. Ajlouni, A. Sheta
In this paper, we present our idea of using the Karhunen Loeve transformation (KLT) and watershed segmentation to detect landmine objects from infrared images. On doing this, we proposed a simplified process for reducing the computation in the Karhunen Loeve transformation using a smaller number of images than traditional methods do. We effectively used the marker based watershed segmentation to detect the mines with high performance detection rate. We tested our proposed method on three different mine fields with two different soil types. Our proposed method consists of four stages: feature extraction, enhancement, object segmentation, and object recognition. The results are promising.
{"title":"Landmind detection with IR sensors using Karhunen Loeve transformation and watershed segmentation","authors":"A. Ajlouni, A. Sheta","doi":"10.1109/SSD.2008.4632869","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632869","url":null,"abstract":"In this paper, we present our idea of using the Karhunen Loeve transformation (KLT) and watershed segmentation to detect landmine objects from infrared images. On doing this, we proposed a simplified process for reducing the computation in the Karhunen Loeve transformation using a smaller number of images than traditional methods do. We effectively used the marker based watershed segmentation to detect the mines with high performance detection rate. We tested our proposed method on three different mine fields with two different soil types. Our proposed method consists of four stages: feature extraction, enhancement, object segmentation, and object recognition. The results are promising.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128861083","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 : 2008-07-20DOI: 10.1109/SSD.2008.4632900
M. Al-Akhras
Multimedia applications play an increasingly important role in the world of communication. To be able to present an effective multimedia service, the quality of the multimedia service should be acceptable to the user. As measuring the multimedia and mainly the voice quality is needed while the network is running, therefore an automated, non-intrusive and overall accurate measurement of quality should be provided. The E-Model proposed by the International Telecommunication Union-Telecommunication Standardisation Sector (ITU-T) achieves this, but it needs the expensive subjective tests to calibrate its parameters. A Genetic Algorithm (GA) approach is proposed in this paper to extend the E-model without the need for the subjective tests. The proposed solution is compared against the E-Model to prove similar results are obtained.
{"title":"A genetic algorithm approach for voice quality prediction","authors":"M. Al-Akhras","doi":"10.1109/SSD.2008.4632900","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632900","url":null,"abstract":"Multimedia applications play an increasingly important role in the world of communication. To be able to present an effective multimedia service, the quality of the multimedia service should be acceptable to the user. As measuring the multimedia and mainly the voice quality is needed while the network is running, therefore an automated, non-intrusive and overall accurate measurement of quality should be provided. The E-Model proposed by the International Telecommunication Union-Telecommunication Standardisation Sector (ITU-T) achieves this, but it needs the expensive subjective tests to calibrate its parameters. A Genetic Algorithm (GA) approach is proposed in this paper to extend the E-model without the need for the subjective tests. The proposed solution is compared against the E-Model to prove similar results are obtained.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"194-199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130677954","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 : 2008-07-20DOI: 10.1109/SSD.2008.4632823
D. Divya Jothi, P. Geetha, S. Anna Durai
Noise reduction is a well known problem in image processing. Several filters have already been developed for reducing noise from color images. Since each filter is designed for a particular noise type, these filters reduce only single type of noise. To overcome this drawback, in this paper a new integrated fuzzy filter is presented for the reduction of two types of noise ie) additive noise and impulse noise from digital color images. In the proposed filter an impulse noise detector is used initially to detect the impulse noise present in the filter. Impulse noise detector divides the set of pixels into two point sub-sets: impulse noise contaminated points and clean points without impulse noise. To select the corresponding filters with respect to the noise types, a filter selection module is designed. The filters reduce the noise and the enhanced image is obtained as the output of integrated filter after reducing both the type of noise. The proposed approach combines the advantages of both the additive and impulse noise filter. Experimental and comparison results show that the proposed approach is effective in removing the integrated noise even with severe contamination. The distortions of the microscope that were occurred during the analysis of the structure of tissues, cells and cellular constituents can be reduced using this filter.
{"title":"An integrated fuzzy additive and impulse noise reduction method for color images","authors":"D. Divya Jothi, P. Geetha, S. Anna Durai","doi":"10.1109/SSD.2008.4632823","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632823","url":null,"abstract":"Noise reduction is a well known problem in image processing. Several filters have already been developed for reducing noise from color images. Since each filter is designed for a particular noise type, these filters reduce only single type of noise. To overcome this drawback, in this paper a new integrated fuzzy filter is presented for the reduction of two types of noise ie) additive noise and impulse noise from digital color images. In the proposed filter an impulse noise detector is used initially to detect the impulse noise present in the filter. Impulse noise detector divides the set of pixels into two point sub-sets: impulse noise contaminated points and clean points without impulse noise. To select the corresponding filters with respect to the noise types, a filter selection module is designed. The filters reduce the noise and the enhanced image is obtained as the output of integrated filter after reducing both the type of noise. The proposed approach combines the advantages of both the additive and impulse noise filter. Experimental and comparison results show that the proposed approach is effective in removing the integrated noise even with severe contamination. The distortions of the microscope that were occurred during the analysis of the structure of tissues, cells and cellular constituents can be reduced using this filter.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134554427","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 : 2008-07-20DOI: 10.1109/SSD.2008.4632806
I. Badran, M. T. Lazim, M. Zeidan
Reliability of power distribution schemes can always be improved at the expense of cost and size. The addition of extra paths proves to increase the continuity of supply. This is really where redundancy steps in, with its two constituents: components redundancy and unitpsilas redundancy. This approach is dealt with in this paper and reliability evaluations for various practical distribution schemes of power supply are considered. A general formula for calculation of ring-main feeders reliability is also developed and applied to these practical distribution schemes. In a ring-bus system, it is found that the reliability of each feeder is decreased by increasing the number of the outgoing feeders, so it is recommended that no more than six feeders are preferable to be connected on such a system.
{"title":"A general solution for ring-bus distribution systems reliability","authors":"I. Badran, M. T. Lazim, M. Zeidan","doi":"10.1109/SSD.2008.4632806","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632806","url":null,"abstract":"Reliability of power distribution schemes can always be improved at the expense of cost and size. The addition of extra paths proves to increase the continuity of supply. This is really where redundancy steps in, with its two constituents: components redundancy and unitpsilas redundancy. This approach is dealt with in this paper and reliability evaluations for various practical distribution schemes of power supply are considered. A general formula for calculation of ring-main feeders reliability is also developed and applied to these practical distribution schemes. In a ring-bus system, it is found that the reliability of each feeder is decreased by increasing the number of the outgoing feeders, so it is recommended that no more than six feeders are preferable to be connected on such a system.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114831958","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 : 2008-07-20DOI: 10.1109/SSD.2008.4632861
H. Ghazaleh, M. Muhanna
Many enhancements of the ordinary TCP are suggested to solve the handoff and bit error rate (BER) problems that may be encountered by any wireless network, leading to decrease its throughputs, such as I-TCP, M-TCP, Snoop TCP, and Freeze TCP. These protocols concern their enhancements in solving one problem, either the handoff problem or the BER problem. In this paper, the MS-TCP protocol is suggested, it combines the features of the M-TCP and the Snoop TCP, which gives it the ability to overcome the handoff and BER problems in wireless network, the MS-TCP keeps the throughput of the sender before and after the handoff similarly, it has a local retransmission facility to retransmit the lost packets which caused by BER, and it is able to recover quickly from losses due to disconnections, to eliminate serial timeouts.
{"title":"Enhancement of throughput time using MS-TCP transport layer protocol for 4G mobiles","authors":"H. Ghazaleh, M. Muhanna","doi":"10.1109/SSD.2008.4632861","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632861","url":null,"abstract":"Many enhancements of the ordinary TCP are suggested to solve the handoff and bit error rate (BER) problems that may be encountered by any wireless network, leading to decrease its throughputs, such as I-TCP, M-TCP, Snoop TCP, and Freeze TCP. These protocols concern their enhancements in solving one problem, either the handoff problem or the BER problem. In this paper, the MS-TCP protocol is suggested, it combines the features of the M-TCP and the Snoop TCP, which gives it the ability to overcome the handoff and BER problems in wireless network, the MS-TCP keeps the throughput of the sender before and after the handoff similarly, it has a local retransmission facility to retransmit the lost packets which caused by BER, and it is able to recover quickly from losses due to disconnections, to eliminate serial timeouts.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133841904","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 : 2008-07-20DOI: 10.1109/SSD.2008.4632871
M. Attari, S. Boukhenous
This paper describes a tactile sensor array for a typical biomedical applications. It is built on positioning a dedicated number of force sensors element which is based on Hall Effect devices. The whole sensing element were mounted on a polymer cylinder bases. Characterisation of the materials used has shown the feasibility of such tactile sensor element. The outputs signals issued from sensors are carried out to a low cost instrumentation amplifiers. After analog processing and filtering, the signals are sampled and digitalized by commercial data acquisition card interfaced to a PC. First calibration was performed for small stress in the linear region of the elastic material with a range smaller than 10 N for instance. For stress greater than 10 N and up to 50 N a routine is implemented regarding the nonlinear shape of the material for nonlinearity correction. Experimental results have been carried out for fingertips force grasping which highlight the easiness realization force sensor prototype.
{"title":"A tactile sensors array for biomedical applications","authors":"M. Attari, S. Boukhenous","doi":"10.1109/SSD.2008.4632871","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632871","url":null,"abstract":"This paper describes a tactile sensor array for a typical biomedical applications. It is built on positioning a dedicated number of force sensors element which is based on Hall Effect devices. The whole sensing element were mounted on a polymer cylinder bases. Characterisation of the materials used has shown the feasibility of such tactile sensor element. The outputs signals issued from sensors are carried out to a low cost instrumentation amplifiers. After analog processing and filtering, the signals are sampled and digitalized by commercial data acquisition card interfaced to a PC. First calibration was performed for small stress in the linear region of the elastic material with a range smaller than 10 N for instance. For stress greater than 10 N and up to 50 N a routine is implemented regarding the nonlinear shape of the material for nonlinearity correction. Experimental results have been carried out for fingertips force grasping which highlight the easiness realization force sensor prototype.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122034740","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 : 2008-07-20DOI: 10.1109/SSD.2008.4632780
F. Mehazzem, A. Reama, Y. Hamam, H. Benalla
An adaptive nonlinear sliding mode controller combined with a field orientation scheme has been developed for the control of induction motor to achieve rotor angular speed and rotor flux amplitude tracking objectives. The inputs to the controller are the reference speed, the reference flux, the measured stator currents, the measured rotor speed, the estimated rotor flux, and estimates of the varying non measurable parameters. The unknown load torque and the rotor resistance which may vary during operation. The controller outputs are the reference stator voltages. An accurate knowledge of the rotor flux, the load torque and the rotor resistance is the key factor in obtaining a high-performance and high-efficiency induction-motor drive. The rotor flux is estimated using the induction-motor rotor-circuit model. Although the estimated rotor flux is insensitive to the stator-resistance variation, it does depend on the rotor resistance. A stable model reference adaptive system (MRAS) rotor-resistance estimator insensitive to stator-resistance variation as well as a load torque estimator have been designed. The use of cascade sliding mode control structure and continuous adaptive update of the machine parameters ensures accurate flux estimation and high-performance operation. Simulation results are presented to verify the stability of the induction-motor drive in various operating modes.
{"title":"Cascade sliding mode control of a field oriented induction motors with varying parameters","authors":"F. Mehazzem, A. Reama, Y. Hamam, H. Benalla","doi":"10.1109/SSD.2008.4632780","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632780","url":null,"abstract":"An adaptive nonlinear sliding mode controller combined with a field orientation scheme has been developed for the control of induction motor to achieve rotor angular speed and rotor flux amplitude tracking objectives. The inputs to the controller are the reference speed, the reference flux, the measured stator currents, the measured rotor speed, the estimated rotor flux, and estimates of the varying non measurable parameters. The unknown load torque and the rotor resistance which may vary during operation. The controller outputs are the reference stator voltages. An accurate knowledge of the rotor flux, the load torque and the rotor resistance is the key factor in obtaining a high-performance and high-efficiency induction-motor drive. The rotor flux is estimated using the induction-motor rotor-circuit model. Although the estimated rotor flux is insensitive to the stator-resistance variation, it does depend on the rotor resistance. A stable model reference adaptive system (MRAS) rotor-resistance estimator insensitive to stator-resistance variation as well as a load torque estimator have been designed. The use of cascade sliding mode control structure and continuous adaptive update of the machine parameters ensures accurate flux estimation and high-performance operation. Simulation results are presented to verify the stability of the induction-motor drive in various operating modes.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125826926","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 : 2008-07-20DOI: 10.1109/SSD.2008.4632849
B. Srinivasarao, I. Chakrabarti
This paper proposes a parallel architecture for a fast three step search (FTSS) algorithm, which is used in motion estimation. FTSS algorithm involves reduced number of search points and is thus less computationally expensive compared to the standard three step search (TSS) algorithm. Degradation of performance while applying the FTSS algorithm to several standard images has been shown to be insignificant compared to the standard TSS algorithm. The proposed architecture uses only three processing elements accompanied with use of intelligent data arrangement and memory configuration. A technique for reducing external memory accesses has also been developed. The proposed architecture for FTSS provides an efficient solution for applications requiring real-time motion estimations, because it requires smaller area and power than what would be required to implement TSS. The proposed architecture provides the solution for low bit-rate video applications like video telephony and teleconferencing.
{"title":"A parallel architectural implementation of the fast three step search algorithm for block motion estimation","authors":"B. Srinivasarao, I. Chakrabarti","doi":"10.1109/SSD.2008.4632849","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632849","url":null,"abstract":"This paper proposes a parallel architecture for a fast three step search (FTSS) algorithm, which is used in motion estimation. FTSS algorithm involves reduced number of search points and is thus less computationally expensive compared to the standard three step search (TSS) algorithm. Degradation of performance while applying the FTSS algorithm to several standard images has been shown to be insignificant compared to the standard TSS algorithm. The proposed architecture uses only three processing elements accompanied with use of intelligent data arrangement and memory configuration. A technique for reducing external memory accesses has also been developed. The proposed architecture for FTSS provides an efficient solution for applications requiring real-time motion estimations, because it requires smaller area and power than what would be required to implement TSS. The proposed architecture provides the solution for low bit-rate video applications like video telephony and teleconferencing.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"481 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123558005","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 : 2008-07-20DOI: 10.1109/SSD.2008.4632803
S. Ghnimi, A. Rajhi, A. Gharsallah
The current paper presents a study on the numerical method of inversion of Laplace transforms (NILT) to deal with some of EMC problems in MW systems under the Matlab environment. The idea consists in studying the two well used algorithms in NILT, one is called quotient-difference algorithm using expansion of the Fourier series and the other is called epsiv-algorithm using the expansion of Laguerre function, in order to reach an optimal algorithm of the NILT method for different multiconductor transmission line (MTL) systems. The simulation results show that the quotient difference algorithm is most efficient than the epsiv-algorithm in term of rapid convergence to zero with a low relative error; these performances increase significantly the use of Laplace transform inversion by the method of Laguerre in MW circuits.
{"title":"Optimal algorithm for the numerical inversion Laplace transforms method in a multiconductor transmission line system","authors":"S. Ghnimi, A. Rajhi, A. Gharsallah","doi":"10.1109/SSD.2008.4632803","DOIUrl":"https://doi.org/10.1109/SSD.2008.4632803","url":null,"abstract":"The current paper presents a study on the numerical method of inversion of Laplace transforms (NILT) to deal with some of EMC problems in MW systems under the Matlab environment. The idea consists in studying the two well used algorithms in NILT, one is called quotient-difference algorithm using expansion of the Fourier series and the other is called epsiv-algorithm using the expansion of Laguerre function, in order to reach an optimal algorithm of the NILT method for different multiconductor transmission line (MTL) systems. The simulation results show that the quotient difference algorithm is most efficient than the epsiv-algorithm in term of rapid convergence to zero with a low relative error; these performances increase significantly the use of Laplace transform inversion by the method of Laguerre in MW circuits.","PeriodicalId":267264,"journal":{"name":"2008 5th International Multi-Conference on Systems, Signals and Devices","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122451705","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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