Pub Date : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686239
A. Glass, N. Abdulaziz, E. Bastaki
A novel slope line code for data transmission and storage on digital communication systems has been proposed. The new line code operates on the principle of slope coding. The slope encoder transmits alternative slopes (stair-step-like pulses) for the transmission of the 1s and 0s of the input binary data. The decoder detects the received signal using correlative slope technique in order to extract the transmitted binary 1s and 0s from the incoming symbols. The encoder and decoder operation were described. The encoder circuit is designed and simulated using MultiSim software. The results show a thorough match with the theory. The new line code has many desirable properties which makes it attractive and a suitable for data transmission and storage on different types of telecommunication networks and multimedia.
{"title":"The slope line code for digital communication systems","authors":"A. Glass, N. Abdulaziz, E. Bastaki","doi":"10.1109/IEEEGCC.2006.5686239","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686239","url":null,"abstract":"A novel slope line code for data transmission and storage on digital communication systems has been proposed. The new line code operates on the principle of slope coding. The slope encoder transmits alternative slopes (stair-step-like pulses) for the transmission of the 1s and 0s of the input binary data. The decoder detects the received signal using correlative slope technique in order to extract the transmitted binary 1s and 0s from the incoming symbols. The encoder and decoder operation were described. The encoder circuit is designed and simulated using MultiSim software. The results show a thorough match with the theory. The new line code has many desirable properties which makes it attractive and a suitable for data transmission and storage on different types of telecommunication networks and multimedia.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121386663","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 : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686202
M. Khurram, S. H. Mirza
Using the processing power of multi-gigahertz general purpose processors (GPP) to perform radio functions can be a better and economical option to design a software defined radio (SDR) system. An efficient SDR system with multiple protocol support can be designed by identifying different blocks in the channel processing stream of different wireless protocols that can be mapped on GPP and field programmable gate arrays (FPGAs) processing platforms depending on throughput requirements of the corresponding protocol. This paper presents the ongoing research work in designing a novel architecture to prototype and develop efficient SDR systems using GPP as main digital signal processing (DSP) platform along with FPGAs to perform realtime signal processing tasks that can not be handled by GPPs. In this research project, a software defined radio is designed for the physical layer of WLAN standard IEEE 802.11a receiver. Different sub-systems of the channel processing stream of IEEE 802.11a OFDM receiver are mapped on GPP of a PC and a PCI board containing fast ADCs to receive the received analog signal from the RF front-end. The software radio architecture discussed in this paper is a scaled down version of the software radio that has to be developed as the research project for M. Engg. by research at NED University by the principal author.
{"title":"A general purpose processor based IEEE802.11a compatible OFDM receiver design","authors":"M. Khurram, S. H. Mirza","doi":"10.1109/IEEEGCC.2006.5686202","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686202","url":null,"abstract":"Using the processing power of multi-gigahertz general purpose processors (GPP) to perform radio functions can be a better and economical option to design a software defined radio (SDR) system. An efficient SDR system with multiple protocol support can be designed by identifying different blocks in the channel processing stream of different wireless protocols that can be mapped on GPP and field programmable gate arrays (FPGAs) processing platforms depending on throughput requirements of the corresponding protocol. This paper presents the ongoing research work in designing a novel architecture to prototype and develop efficient SDR systems using GPP as main digital signal processing (DSP) platform along with FPGAs to perform realtime signal processing tasks that can not be handled by GPPs. In this research project, a software defined radio is designed for the physical layer of WLAN standard IEEE 802.11a receiver. Different sub-systems of the channel processing stream of IEEE 802.11a OFDM receiver are mapped on GPP of a PC and a PCI board containing fast ADCs to receive the received analog signal from the RF front-end. The software radio architecture discussed in this paper is a scaled down version of the software radio that has to be developed as the research project for M. Engg. by research at NED University by the principal author.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"227 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116596984","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 : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686240
S. A. Sattarzadeh, B. Abolhassani
This paper proposes and evaluates a simple and efficient method to mitigate the positioning error caused by Multipath fading channels. Using geometric properties of the correlated received signals and Monte Carlo simulations, a lookup table has been developed to correct the TDOA estimation error. The performance of this multipath rejection (MPR) method has been evaluated for 3GPP wireless network standards. Simulation results show that the proposed method reduces the TDOA estimation error significantly and therefore improves the accuracy of mobile position estimation.
{"title":"A simple and efficient method of multipath rejection (MPR) in Multipath fading channels for location estimations","authors":"S. A. Sattarzadeh, B. Abolhassani","doi":"10.1109/IEEEGCC.2006.5686240","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686240","url":null,"abstract":"This paper proposes and evaluates a simple and efficient method to mitigate the positioning error caused by Multipath fading channels. Using geometric properties of the correlated received signals and Monte Carlo simulations, a lookup table has been developed to correct the TDOA estimation error. The performance of this multipath rejection (MPR) method has been evaluated for 3GPP wireless network standards. Simulation results show that the proposed method reduces the TDOA estimation error significantly and therefore improves the accuracy of mobile position estimation.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116788394","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 : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686246
H. Sayoud, S. Ouamour
Given that most of the speech signal recordings are generally mixed with other sounds like music, songs, or noises and knowing that the processing of any speech signal will be easier when we separate the speech area from the non-speech area, we propose a preprocessing method for speech/ non speech discrimination which is also able to identify some acoustic sounds, by using some statistical observations (mean, standard deviation) linked to a statistic measure of similarity (μGc). Since it has been possible to discriminate between speakers thanks to the small within-variability and the large between-variability of the speaker's acoustic features, we thought to extend this property for the purpose of acoustic sounds discrimination. Thus, we led an investigation on different types of sounds as: noises, music and speech (speech signals are extracted from TIMIT database). The purpose of this investigation is to try to define a separate class for each type of sound according to the similarity measure μGc. Experiments showed that the similarity distance range, between speech and other acoustic signals, has a mean and standard deviation which are specific for each sound. So, for instance it will be possible to state whether a particular audio signal is really speech or non-speech, only by observing the statistical range of the μGc which is chosen as a similarity distance. For instance, we have deduced that thanks to the value of μGc it is possible to know if an audio frame is a pure speech or music: if μGc is within [2.5-4.9] then the considered sound should be music.
{"title":"Statistical discrimination and identification of some acoustic sounds","authors":"H. Sayoud, S. Ouamour","doi":"10.1109/IEEEGCC.2006.5686246","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686246","url":null,"abstract":"Given that most of the speech signal recordings are generally mixed with other sounds like music, songs, or noises and knowing that the processing of any speech signal will be easier when we separate the speech area from the non-speech area, we propose a preprocessing method for speech/ non speech discrimination which is also able to identify some acoustic sounds, by using some statistical observations (mean, standard deviation) linked to a statistic measure of similarity (μGc). Since it has been possible to discriminate between speakers thanks to the small within-variability and the large between-variability of the speaker's acoustic features, we thought to extend this property for the purpose of acoustic sounds discrimination. Thus, we led an investigation on different types of sounds as: noises, music and speech (speech signals are extracted from TIMIT database). The purpose of this investigation is to try to define a separate class for each type of sound according to the similarity measure μGc. Experiments showed that the similarity distance range, between speech and other acoustic signals, has a mean and standard deviation which are specific for each sound. So, for instance it will be possible to state whether a particular audio signal is really speech or non-speech, only by observing the statistical range of the μGc which is chosen as a similarity distance. For instance, we have deduced that thanks to the value of μGc it is possible to know if an audio frame is a pure speech or music: if μGc is within [2.5-4.9] then the considered sound should be music.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131697899","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 : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686235
N. Zaeri
In January 2005, the State of Kuwait has launched one of the most advanced and sophisticated environmental projects in the Middle-East to monitor its water territories. This leading project, which is funded by the Environment Public Authority, is considered the main building block for a huge integrated system to monitor the environmental status for the whole area of Kuwait. The advanced system consists of a number of buoys integrated with the state-of-the-art suite of sensors that measure a number of important biological and chemical parameters in water. These parameters are crucial to monitor if someone is seeking to inspect the oil pollution, Industrial pollution, Organic pollution, and Sewage and Wastewater. Finally, this system enhances the capability in predicting any abnormal or undesired event that may affect the eco-system of the State of Kuwait.
{"title":"Marine environment monitoring system for Kuwaiti water territories","authors":"N. Zaeri","doi":"10.1109/IEEEGCC.2006.5686235","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686235","url":null,"abstract":"In January 2005, the State of Kuwait has launched one of the most advanced and sophisticated environmental projects in the Middle-East to monitor its water territories. This leading project, which is funded by the Environment Public Authority, is considered the main building block for a huge integrated system to monitor the environmental status for the whole area of Kuwait. The advanced system consists of a number of buoys integrated with the state-of-the-art suite of sensors that measure a number of important biological and chemical parameters in water. These parameters are crucial to monitor if someone is seeking to inspect the oil pollution, Industrial pollution, Organic pollution, and Sewage and Wastewater. Finally, this system enhances the capability in predicting any abnormal or undesired event that may affect the eco-system of the State of Kuwait.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124612219","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 : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686214
H. Okamoto, K. Anwar, T. Hara, M. Saito, M. Okada, H. Yamamoto
This paper proposes a new technique for peak-to-average-power ratio (PAPR) reduction without spectrum broadening for Carrier Interferometry orthogonal frequency division multiplexing (CI/OFDM) system. Recently, Carrier Interferometry (CI) code is becoming an interesting code for reducing the PAPR of OFDM system. However, for guaranteeing the low PAPR as the PAPR of single carrier (i.e. by about 4-6dB with roll-of-factor of 0.2-0.5), we propose low complexity clipping technique for CI/OFDM system. However, it can be easily adapted for other OFDM systems. The main contribution of this paper is the introduction of a new clipping technique with low complexity frequency domain filtering (FDF) which is employed prior to the IFFT. The benefits of the proposed technique are low complexity of FDF and no spectrum broadening. Our results confirm that the PAPR of clipped CI/OFDM can be reduced by about 1dB better than that of the conventional clipped OFDM signals. We clarified that the PAPR is now similar to the PAPR of single carrier system. In the frequency selective fading channel, the bit-error-rate (BER) performance is also improved by about 7dB better than that of the traditional OFDM system due to the frequency diversity benefits in CI/OFDM system.
{"title":"A new concept of clipping without spectrum broadening for carrier interferometry OFDM system","authors":"H. Okamoto, K. Anwar, T. Hara, M. Saito, M. Okada, H. Yamamoto","doi":"10.1109/IEEEGCC.2006.5686214","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686214","url":null,"abstract":"This paper proposes a new technique for peak-to-average-power ratio (PAPR) reduction without spectrum broadening for Carrier Interferometry orthogonal frequency division multiplexing (CI/OFDM) system. Recently, Carrier Interferometry (CI) code is becoming an interesting code for reducing the PAPR of OFDM system. However, for guaranteeing the low PAPR as the PAPR of single carrier (i.e. by about 4-6dB with roll-of-factor of 0.2-0.5), we propose low complexity clipping technique for CI/OFDM system. However, it can be easily adapted for other OFDM systems. The main contribution of this paper is the introduction of a new clipping technique with low complexity frequency domain filtering (FDF) which is employed prior to the IFFT. The benefits of the proposed technique are low complexity of FDF and no spectrum broadening. Our results confirm that the PAPR of clipped CI/OFDM can be reduced by about 1dB better than that of the conventional clipped OFDM signals. We clarified that the PAPR is now similar to the PAPR of single carrier system. In the frequency selective fading channel, the bit-error-rate (BER) performance is also improved by about 7dB better than that of the traditional OFDM system due to the frequency diversity benefits in CI/OFDM system.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123151491","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 : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686218
M. Zribi, A. Oteafy
The paper deals with the control of a bioreactor. Three sliding mode control schemes are proposed for the bioreactor benchmark problem. The first two controllers are static sliding mode controllers; the third controller is a dynamic sliding mode controller. The three controllers guarantee the asymptotic convergence of the states of the system to their desired values. Simulation results are given to illustrate the effectiveness of the proposed controllers. It is found that the proposed control schemes work well for the benchmark bioreactor problem. Also, the simulation results indicate that the proposed schemes are robust to variations in the parameters of the plant.
{"title":"Control of a bioreactor using static and dynamic sliding mode controllers","authors":"M. Zribi, A. Oteafy","doi":"10.1109/IEEEGCC.2006.5686218","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686218","url":null,"abstract":"The paper deals with the control of a bioreactor. Three sliding mode control schemes are proposed for the bioreactor benchmark problem. The first two controllers are static sliding mode controllers; the third controller is a dynamic sliding mode controller. The three controllers guarantee the asymptotic convergence of the states of the system to their desired values. Simulation results are given to illustrate the effectiveness of the proposed controllers. It is found that the proposed control schemes work well for the benchmark bioreactor problem. Also, the simulation results indicate that the proposed schemes are robust to variations in the parameters of the plant.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122621693","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 : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686185
E. Al-Gallaf
This research article presents a Fuzzy structure for a Model Predictive Control (MPC) system. MPC theorem has recently been incorporated with fuzzy models. Such an integration provides controller design methods for an MPC control system. The paper concentrates on aspects of fuzzy based MPC for multivariable systems. Mathematical formulation of linearized MPC is utilized to introduce the concept of fuzzy based MPC scheme, then fuzzy MPC is constructed based on a modeled pH reactor.
{"title":"Intelligent nonlinear predictive control","authors":"E. Al-Gallaf","doi":"10.1109/IEEEGCC.2006.5686185","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686185","url":null,"abstract":"This research article presents a Fuzzy structure for a Model Predictive Control (MPC) system. MPC theorem has recently been incorporated with fuzzy models. Such an integration provides controller design methods for an MPC control system. The paper concentrates on aspects of fuzzy based MPC for multivariable systems. Mathematical formulation of linearized MPC is utilized to introduce the concept of fuzzy based MPC scheme, then fuzzy MPC is constructed based on a modeled pH reactor.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"11 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120872400","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 : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686230
A. Hellany
The new and active learning environment in tertiary education is forcing academics to discuss the effectiveness of traditional teaching strategies that address the diverse learning styles of engineering students. A number of personality type indicators have been used in the past to determine students various learning styles. This paper introduces the Enneagram as a new tool to determine the student's learning style. The Enneagram can also be used to describe psychological preferences of engineering educators.
{"title":"Enneagram: Exploring learning styles of engineering students","authors":"A. Hellany","doi":"10.1109/IEEEGCC.2006.5686230","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686230","url":null,"abstract":"The new and active learning environment in tertiary education is forcing academics to discuss the effectiveness of traditional teaching strategies that address the diverse learning styles of engineering students. A number of personality type indicators have been used in the past to determine students various learning styles. This paper introduces the Enneagram as a new tool to determine the student's learning style. The Enneagram can also be used to describe psychological preferences of engineering educators.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115303760","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 : 2006-03-20DOI: 10.1109/IEEEGCC.2006.5686260
M. Asif, M. Omer, A. Luna, N. Sheikh
Recent years have seen rapid evolution in the architectures being explored for realizing high-speed software-defined radios. There is, however, a distinct need for a low-cost programmable platform where algorithms for base-band transceivers can be rapidly prototyped and tested with real-world data, streaming in from diverse sources of telecommunication traffic. This paper explores an analytical method for laying out such a generic platform. It investigates the constraints involved in realizing such a platform, and the minimum functionality needed within the solution so as to provide adequate scalability to allow the implementation of a wide variety of communication algorithms. The paper concludes with a case study of a multi-channel communication system that has been successfully implemented on the proposed platform, highlighting the performance benchmarks it had to meet in order to prove suitable for the task of communication system evaluation.
{"title":"A multiprocessor framework for rapid-prototyping and evaluation of soft transceivers","authors":"M. Asif, M. Omer, A. Luna, N. Sheikh","doi":"10.1109/IEEEGCC.2006.5686260","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2006.5686260","url":null,"abstract":"Recent years have seen rapid evolution in the architectures being explored for realizing high-speed software-defined radios. There is, however, a distinct need for a low-cost programmable platform where algorithms for base-band transceivers can be rapidly prototyped and tested with real-world data, streaming in from diverse sources of telecommunication traffic. This paper explores an analytical method for laying out such a generic platform. It investigates the constraints involved in realizing such a platform, and the minimum functionality needed within the solution so as to provide adequate scalability to allow the implementation of a wide variety of communication algorithms. The paper concludes with a case study of a multi-channel communication system that has been successfully implemented on the proposed platform, highlighting the performance benchmarks it had to meet in order to prove suitable for the task of communication system evaluation.","PeriodicalId":433452,"journal":{"name":"2006 IEEE GCC Conference (GCC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126184509","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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