Pub Date : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705839
Husain Mohamed Al Meer, S. S. Chhajta, Ali Al Uzri
The performance of Overhead Lines (OHLs) in the Western Region of the Emirate of Abu Dhabi has the highest contribution to the distribution network reliability indices of Abu Dhabi Distribution Company (ADDC). Over the past seven years, the OHL's interruption accounted for an average share of 70% of both regional unplanned HV SAIDI and SAIFI. The transient faults of those interruptions has the major contribution with 24 % of regional unplanned SAIDI and 37% of regional unplanned SAIFI, while the other component of OHL accounted for the remaining percentages such as bad condition of insulators and jumpers, etc. This paper addresses ADDC's strategy and experience in providing systematic evaluation for its OHL network performance. This strategy considers: 1) identification of circuits, 2) prioritization of circuits and 3) potential initiatives and projects to improve OHL's performance. The developed approach and initiated projects undergo comprehensive evaluations on a periodic basis to check their effectiveness in achieving the expected performance target. A simple and practical approach has been recommended for identifying the system components that contribute significantly to the reliability indices, ranking of initiatives and continuous review of the planned actions. This approach focuses on the key contributors of the network's problems and could provide considerable benefits associated with the Capital and Operational Expenditures (CAPEX and OPEX).
{"title":"Smart overhead lines performance enhancement initiatives to improve distribution networks of Abu Dhabi Distribution company","authors":"Husain Mohamed Al Meer, S. S. Chhajta, Ali Al Uzri","doi":"10.1109/IEEEGCC.2013.6705839","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705839","url":null,"abstract":"The performance of Overhead Lines (OHLs) in the Western Region of the Emirate of Abu Dhabi has the highest contribution to the distribution network reliability indices of Abu Dhabi Distribution Company (ADDC). Over the past seven years, the OHL's interruption accounted for an average share of 70% of both regional unplanned HV SAIDI and SAIFI. The transient faults of those interruptions has the major contribution with 24 % of regional unplanned SAIDI and 37% of regional unplanned SAIFI, while the other component of OHL accounted for the remaining percentages such as bad condition of insulators and jumpers, etc. This paper addresses ADDC's strategy and experience in providing systematic evaluation for its OHL network performance. This strategy considers: 1) identification of circuits, 2) prioritization of circuits and 3) potential initiatives and projects to improve OHL's performance. The developed approach and initiated projects undergo comprehensive evaluations on a periodic basis to check their effectiveness in achieving the expected performance target. A simple and practical approach has been recommended for identifying the system components that contribute significantly to the reliability indices, ranking of initiatives and continuous review of the planned actions. This approach focuses on the key contributors of the network's problems and could provide considerable benefits associated with the Capital and Operational Expenditures (CAPEX and OPEX).","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"9 36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114324498","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705841
A. Gastli, Y. Charabi, R. Alammari, Ali Al-Ali
This paper presents the analysis of the impact of weather conditions on the maximum electricity demand in Qatar during the whole year 2012. It points out the maximum daily air temperature as the most influential climate (meteorological) parameter. Correlation between maximum daily temperature and maximum daily electricity demand are also indicated and analyzed. It is noticed that there is a linear correlation between these two variables for maximum temperature values above 22°C because of the air-conditioning type of the major load. During extremely hot summer periods, there is a tendency of increased electricity consumption because of air conditioning. A timely and accurate weather forecast can certainly help prevent the electrical power system overload and reduce the risk of possible power system damage.
{"title":"Correlation between climate data and maximum electricity demand in Qatar","authors":"A. Gastli, Y. Charabi, R. Alammari, Ali Al-Ali","doi":"10.1109/IEEEGCC.2013.6705841","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705841","url":null,"abstract":"This paper presents the analysis of the impact of weather conditions on the maximum electricity demand in Qatar during the whole year 2012. It points out the maximum daily air temperature as the most influential climate (meteorological) parameter. Correlation between maximum daily temperature and maximum daily electricity demand are also indicated and analyzed. It is noticed that there is a linear correlation between these two variables for maximum temperature values above 22°C because of the air-conditioning type of the major load. During extremely hot summer periods, there is a tendency of increased electricity consumption because of air conditioning. A timely and accurate weather forecast can certainly help prevent the electrical power system overload and reduce the risk of possible power system damage.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"44 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114105881","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705759
A. Alahmadi, Arash Joorabchi, A. Mahdi
This paper introduces a new approach to creating text representations and apply it to a standard text classification collections. The approach is based on supplementing the well-known Bag-of-Words (BOW) representational scheme with a concept-based representation that utilises Wikipedia as a knowledge base. The proposed representations are used to generate a Vector Space Model, which in turn is fed into a Support Vector Machine classifier to categorise a collection of textual documents from two publically available datasets. Experimental results for evaluating the performance of our model in comparison to using a standard BOW scheme and a concept-based scheme, as well as recently reported similar text representations that are based on augmenting the standard BOW approach with concept-based representations.
{"title":"A new text representation scheme combining Bag-of-Words and Bag-of-Concepts approaches for automatic text classification","authors":"A. Alahmadi, Arash Joorabchi, A. Mahdi","doi":"10.1109/IEEEGCC.2013.6705759","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705759","url":null,"abstract":"This paper introduces a new approach to creating text representations and apply it to a standard text classification collections. The approach is based on supplementing the well-known Bag-of-Words (BOW) representational scheme with a concept-based representation that utilises Wikipedia as a knowledge base. The proposed representations are used to generate a Vector Space Model, which in turn is fed into a Support Vector Machine classifier to categorise a collection of textual documents from two publically available datasets. Experimental results for evaluating the performance of our model in comparison to using a standard BOW scheme and a concept-based scheme, as well as recently reported similar text representations that are based on augmenting the standard BOW approach with concept-based representations.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117297737","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705746
A. Jarndal
Prediction of future load demand is important for secure operation of power systems and their economical utilization. A number of algorithms have been suggested for solving this problem. In this paper, a genetic-fuzzy-neural networks approach for mid-term load forecasting is proposed. In this paper the relationship between humidity, temperature and load is identified with a case study for a particular region in Oman. The output load obtained is corrected using a correction factor from neural networks model, which depends on previous set of loads. Data for monthly peak load of four years has been used for training the model, which then forecasts the load of the fifth year. The model has been validated using actual data from an electricity company.
{"title":"Load forecasting for power system planning using a genetic-fuzzy-neural networks approach","authors":"A. Jarndal","doi":"10.1109/IEEEGCC.2013.6705746","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705746","url":null,"abstract":"Prediction of future load demand is important for secure operation of power systems and their economical utilization. A number of algorithms have been suggested for solving this problem. In this paper, a genetic-fuzzy-neural networks approach for mid-term load forecasting is proposed. In this paper the relationship between humidity, temperature and load is identified with a case study for a particular region in Oman. The output load obtained is corrected using a correction factor from neural networks model, which depends on previous set of loads. Data for monthly peak load of four years has been used for training the model, which then forecasts the load of the fifth year. The model has been validated using actual data from an electricity company.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115070130","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705788
A. Morsy, A. Abdel-Khalik, Shehab Ahmed, A. Massoud
This paper introduces a sensorless scalar controller with MRAS speed estimator based on simple Proportional Resonant PR controllers to provide a disturbance-free operation to a five-phase induction machine under phase open and based on optimal current control. The machine speed is estimated using MRAS observer based on rotor flux (RF-MRAS). Under open phase, the torque-producing fundamental sequence current is used to estimate the required third sequence current components to ensure equal remaining healthy currents. Two PR controllers are then used to determine the corresponding third sequence voltage components. The used optimization criterion ensures maximum fundamental torque, minimum torque ripples, and equal line currents. The proposed controller is verified using a 1.5hp prototype machine for both dynamic and steady-state cases.
{"title":"Sensorless V/f control with MRAS speed estimator for a five-phase induction machine under open-circuit phase faults","authors":"A. Morsy, A. Abdel-Khalik, Shehab Ahmed, A. Massoud","doi":"10.1109/IEEEGCC.2013.6705788","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705788","url":null,"abstract":"This paper introduces a sensorless scalar controller with MRAS speed estimator based on simple Proportional Resonant PR controllers to provide a disturbance-free operation to a five-phase induction machine under phase open and based on optimal current control. The machine speed is estimated using MRAS observer based on rotor flux (RF-MRAS). Under open phase, the torque-producing fundamental sequence current is used to estimate the required third sequence current components to ensure equal remaining healthy currents. Two PR controllers are then used to determine the corresponding third sequence voltage components. The used optimization criterion ensures maximum fundamental torque, minimum torque ripples, and equal line currents. The proposed controller is verified using a 1.5hp prototype machine for both dynamic and steady-state cases.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122518672","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705820
R. Nasereddine, I. Amor, A. Massoud, L. Ben Brahim
The solid state circuit breaker (SSCB) is a protective device used in power systems to provide protection against short circuit. The objective of this paper is to study and implement a simplified prototype of SSCB as a fault current limiter with distributed generation where the increased fault current level represents one of the challenges faced with the proliferation of distributed generation. In this paper, the switches employed in the design of SSCBs are presented. Simulation of SSCB using Matlab/Simulink is conducted to study its feasibility and performance for fault current limitation. Then, a hardware prototype of SSCB using IGBTs has been built and practical results have been presented.
{"title":"AC solid state circuit breakers for fault current limitation in distributed generation","authors":"R. Nasereddine, I. Amor, A. Massoud, L. Ben Brahim","doi":"10.1109/IEEEGCC.2013.6705820","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705820","url":null,"abstract":"The solid state circuit breaker (SSCB) is a protective device used in power systems to provide protection against short circuit. The objective of this paper is to study and implement a simplified prototype of SSCB as a fault current limiter with distributed generation where the increased fault current level represents one of the challenges faced with the proliferation of distributed generation. In this paper, the switches employed in the design of SSCBs are presented. Simulation of SSCB using Matlab/Simulink is conducted to study its feasibility and performance for fault current limitation. Then, a hardware prototype of SSCB using IGBTs has been built and practical results have been presented.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117086419","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705801
Reza Shakeri, Abbas Taherpour, H. Khakzad, T. Khattab
In this paper, we investigate the power allocation in two-way multi-relay assisted cooperative network in which the relays operate in decode-and-forward (DF) protocol. In the proposed method for choosing the best relay there is no need for channel state information (CSI) in transmitter terminals. Based on the minimum of the channel coefficients between source-relay and relay-destination, we choose the relay which its associated minimum coefficient is maximum among all the relays. We derive a closed form expression for bit error rate (BER) in cooperative networks with two-way relays according to our proposed algorithm for relay selection. Optimum power allocation between sources and selected relay yields to almost 2dB improvement in BER performance.
{"title":"Optimal power allocation and relay selection in two-way multi-relay cooperative communication","authors":"Reza Shakeri, Abbas Taherpour, H. Khakzad, T. Khattab","doi":"10.1109/IEEEGCC.2013.6705801","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705801","url":null,"abstract":"In this paper, we investigate the power allocation in two-way multi-relay assisted cooperative network in which the relays operate in decode-and-forward (DF) protocol. In the proposed method for choosing the best relay there is no need for channel state information (CSI) in transmitter terminals. Based on the minimum of the channel coefficients between source-relay and relay-destination, we choose the relay which its associated minimum coefficient is maximum among all the relays. We derive a closed form expression for bit error rate (BER) in cooperative networks with two-way relays according to our proposed algorithm for relay selection. Optimum power allocation between sources and selected relay yields to almost 2dB improvement in BER performance.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121681586","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705751
A. Yassine
Existing studies are to a great extent focus on energy saving mechanisms of individual customers, independently, from other energy consumers. This paper considers an agent-based cooperative model among consumers in the smart grid. The agents in our model act on behalf of residential consumers through techniques such as domestic energy controllers or the smart meters, which are available for end-users in the smart grid. solution concept is proposed based on cooperative games. In this paper, we discuss the performance of the agents' payoff under the concept of coalition formation. Our proposed approach is intended as a decentralized method where coalition formation is achieved through self-organization.
{"title":"Cooperative games among consumers in the smart grid","authors":"A. Yassine","doi":"10.1109/IEEEGCC.2013.6705751","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705751","url":null,"abstract":"Existing studies are to a great extent focus on energy saving mechanisms of individual customers, independently, from other energy consumers. This paper considers an agent-based cooperative model among consumers in the smart grid. The agents in our model act on behalf of residential consumers through techniques such as domestic energy controllers or the smart meters, which are available for end-users in the smart grid. solution concept is proposed based on cooperative games. In this paper, we discuss the performance of the agents' payoff under the concept of coalition formation. Our proposed approach is intended as a decentralized method where coalition formation is achieved through self-organization.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116107731","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705814
M. Abdulwahed, S. Pokharel, W. Balid, M. Hasna
The required talent of 21st century engineering and technology human resource is significantly different and more complex than what has been needed ever before. Numerous relevant studies have been conducted during the last decade or two. The studies generally follow a needs based approach rather than a systemic study. In a systemic study for understanding the requirements, architectural framework needs to be developed first by decomposing the problem in to various sub requirements and then finally integrating them to provide a holistic view of the requirements. The paper provides, probably, the first systemic framework for investigation of needed engineering and technology competencies in a national context. The other contribution of the paper is a decomposition of different terms and definition related to skills, attributes, and competencies development into a systemic dynamic model.
{"title":"Systemic framework of competencies of 21st century technical and engineering human resource: A development case for a knowledge based Economy in Qatar","authors":"M. Abdulwahed, S. Pokharel, W. Balid, M. Hasna","doi":"10.1109/IEEEGCC.2013.6705814","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705814","url":null,"abstract":"The required talent of 21st century engineering and technology human resource is significantly different and more complex than what has been needed ever before. Numerous relevant studies have been conducted during the last decade or two. The studies generally follow a needs based approach rather than a systemic study. In a systemic study for understanding the requirements, architectural framework needs to be developed first by decomposing the problem in to various sub requirements and then finally integrating them to provide a holistic view of the requirements. The paper provides, probably, the first systemic framework for investigation of needed engineering and technology competencies in a national context. The other contribution of the paper is a decomposition of different terms and definition related to skills, attributes, and competencies development into a systemic dynamic model.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131844295","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705804
Hicham Lakhlef, A. Bentaleb, J. Myoupo, Abdelhak Boubetra, S. Harous
The hierarchical clustering for wireless sensors networks is treated to solve the scalability problem in routing protocols for multi-hop wireless networks. Also a clustering-based technique is proposed to provide location management of devices for QoS support. To the best of our knowledge there is no protocol that combines the hierarchical partitioning into clusters and cliques taking into account the size of cliques and clusters (a clique is a network where every node can communicate directly with every other node in the same clique). In this paper, we propose a new partitioning scheme motivated by the need to have minimum and maximum size for cliques and clusters. In fact, this size has a direct effect on energy consumption. Indeed, for a large size of clique or cluster the cluster head should register the identities of its cluster members and manage them. That is not always feasible because sensor networks have a very limited memory capacity and energy. In addition, limiting the number of sensors in each clique or cluster avoids a significant number of cluster head re-election where the energy will be the parameter of election. So the characteristics of WSN are not satisfied, the aim of our work is to deal with these cases.
{"title":"Cliques and clusters based hierarchical scheme for sensor networks partitioning","authors":"Hicham Lakhlef, A. Bentaleb, J. Myoupo, Abdelhak Boubetra, S. Harous","doi":"10.1109/IEEEGCC.2013.6705804","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705804","url":null,"abstract":"The hierarchical clustering for wireless sensors networks is treated to solve the scalability problem in routing protocols for multi-hop wireless networks. Also a clustering-based technique is proposed to provide location management of devices for QoS support. To the best of our knowledge there is no protocol that combines the hierarchical partitioning into clusters and cliques taking into account the size of cliques and clusters (a clique is a network where every node can communicate directly with every other node in the same clique). In this paper, we propose a new partitioning scheme motivated by the need to have minimum and maximum size for cliques and clusters. In fact, this size has a direct effect on energy consumption. Indeed, for a large size of clique or cluster the cluster head should register the identities of its cluster members and manage them. That is not always feasible because sensor networks have a very limited memory capacity and energy. In addition, limiting the number of sensors in each clique or cluster avoids a significant number of cluster head re-election where the energy will be the parameter of election. So the characteristics of WSN are not satisfied, the aim of our work is to deal with these cases.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121308050","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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