Pub Date : 2015-08-01DOI: 10.1109/ICPACE.2015.7274985
S. Biradar, Sahaj Saxena, Y. V. Hote
Automatic voltage regulator (AVR) is an essential entity for power system operation. Therefore, to observe the behavior and performance of AVR, study of its modeling is necessary. Since AVR is a complex system having higher order transfer function, so it is tedious to study it. In this paper, different model reduction scheme have been discussed and implemented for this system. We have applied ten different model order reduction schemes and a descriptive study of time and frequency domain analysis has been carried out. It has been observed that although different reduced models emulate the original system but their characteristics in frequency domain vary when few specifications are taken into account, for example, gain and phase margins, notch characteristics, etc. Therefore, on the basis of requirements, system engineer has to select particular reduced model for analysis and controller synthesis.
{"title":"Simplified model identification of automatic voltage regulator using model-order reduction","authors":"S. Biradar, Sahaj Saxena, Y. V. Hote","doi":"10.1109/ICPACE.2015.7274985","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274985","url":null,"abstract":"Automatic voltage regulator (AVR) is an essential entity for power system operation. Therefore, to observe the behavior and performance of AVR, study of its modeling is necessary. Since AVR is a complex system having higher order transfer function, so it is tedious to study it. In this paper, different model reduction scheme have been discussed and implemented for this system. We have applied ten different model order reduction schemes and a descriptive study of time and frequency domain analysis has been carried out. It has been observed that although different reduced models emulate the original system but their characteristics in frequency domain vary when few specifications are taken into account, for example, gain and phase margins, notch characteristics, etc. Therefore, on the basis of requirements, system engineer has to select particular reduced model for analysis and controller synthesis.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"416 1","pages":"423-428"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79454411","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274957
P. A. D. Vimal raj, Y. Monica, Syed Ansaar, J. Pradeeban
This paper presents population set based optimization method for solving economic and emission dispatch problems, satisfying the equality and inequality constraints. The results have been demonstrated for economic and emission dispatch of standard three-unit and 6-unit system. The PSBO algorithm is compared with the conventional method and Particle swarm optimization and observed that PSBO algorithm gave appreciable results.
{"title":"Population set based optimization method (PSBO) for economic and emission dispatch problems","authors":"P. A. D. Vimal raj, Y. Monica, Syed Ansaar, J. Pradeeban","doi":"10.1109/ICPACE.2015.7274957","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274957","url":null,"abstract":"This paper presents population set based optimization method for solving economic and emission dispatch problems, satisfying the equality and inequality constraints. The results have been demonstrated for economic and emission dispatch of standard three-unit and 6-unit system. The PSBO algorithm is compared with the conventional method and Particle swarm optimization and observed that PSBO algorithm gave appreciable results.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"226 1","pages":"275-279"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76092276","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274966
Ganapathi Moger, C. Murthy, U. Yaragatti
The experimental investigation study on energy consumption of fabricated 3hp mine drive haulage system is presented. The performance analysis of energy consumption based on existing mine drive haulage system of underground coal mine and experimental set-up is prepared in the laboratory for a 3-hp wound rotor induction motor. The experimental and a case study results are simulated using MATLAB /simulink model and the compared results are presented in this paper.
{"title":"Experimental, simulation and a case study on electrical energy consumption in mine drive haulage system","authors":"Ganapathi Moger, C. Murthy, U. Yaragatti","doi":"10.1109/ICPACE.2015.7274966","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274966","url":null,"abstract":"The experimental investigation study on energy consumption of fabricated 3hp mine drive haulage system is presented. The performance analysis of energy consumption based on existing mine drive haulage system of underground coal mine and experimental set-up is prepared in the laboratory for a 3-hp wound rotor induction motor. The experimental and a case study results are simulated using MATLAB /simulink model and the compared results are presented in this paper.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"36 1","pages":"322-326"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73775626","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274952
Praveen V. Pol, S. Patil, Vivek G. Zulzule
The paper presents a single phase, single stage, four switches, sine wave inverter topology, employing a step up ferrite core transformer with center tapped primary. The topology has a push pull configuration and operates in a forward conversion mode for converting DC power to AC power. Battery or a solar photovoltaic panel may be used as a DC input power source. The proposed topology is basically a combination of two step up forward converters with inverting and non-inverting outputs. The topology was tested using a sine wave PWM technique. Battery bank was used as a DC source and incandescent lamps as resistive loads. The simulation was done for verification of the operation of the circuit and it was also tested experimentally for the expected output of 230 V, 50 Hz AC. In this paper, operation of the inverter topology is explained. Preliminary simulation and experimental results of the prototype are presented for realization of the operation of the topology.
{"title":"A four switch transformer isolated single phase push-pull inverter topology: Design and experimentation","authors":"Praveen V. Pol, S. Patil, Vivek G. Zulzule","doi":"10.1109/ICPACE.2015.7274952","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274952","url":null,"abstract":"The paper presents a single phase, single stage, four switches, sine wave inverter topology, employing a step up ferrite core transformer with center tapped primary. The topology has a push pull configuration and operates in a forward conversion mode for converting DC power to AC power. Battery or a solar photovoltaic panel may be used as a DC input power source. The proposed topology is basically a combination of two step up forward converters with inverting and non-inverting outputs. The topology was tested using a sine wave PWM technique. Battery bank was used as a DC source and incandescent lamps as resistive loads. The simulation was done for verification of the operation of the circuit and it was also tested experimentally for the expected output of 230 V, 50 Hz AC. In this paper, operation of the inverter topology is explained. Preliminary simulation and experimental results of the prototype are presented for realization of the operation of the topology.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"53 1","pages":"248-252"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90583083","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274934
S. Adiga, H. Janardhan, B. Vijeth, N. Shivashankarappa
Estimation of future data in systems with delayed state is a challenging problem. In this paper, two methods of using Kalman Filter in such systems is presented. In the first method, the delayed states are incorporated in the state matrix, while in the second method the delayed states are incorporated into the state equation form. Comparisons of the results made by applying the above methods on delayed state systems show that the second method predicts the data with more accuracy. The Kalman Filter with delayed states in the state equation is then modified to account for the missing measurements, which is a common phenomenon in the Wireless Sensor Networks. The performance of the obtained equations are then evaluated for the delayed state systems in the presence of missing measurements.
{"title":"Synergy of delayed states and missing data in Wireless Sensor Networks using Kalman Filters","authors":"S. Adiga, H. Janardhan, B. Vijeth, N. Shivashankarappa","doi":"10.1109/ICPACE.2015.7274934","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274934","url":null,"abstract":"Estimation of future data in systems with delayed state is a challenging problem. In this paper, two methods of using Kalman Filter in such systems is presented. In the first method, the delayed states are incorporated in the state matrix, while in the second method the delayed states are incorporated into the state equation form. Comparisons of the results made by applying the above methods on delayed state systems show that the second method predicts the data with more accuracy. The Kalman Filter with delayed states in the state equation is then modified to account for the missing measurements, which is a common phenomenon in the Wireless Sensor Networks. The performance of the obtained equations are then evaluated for the delayed state systems in the presence of missing measurements.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"10 1","pages":"152-156"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74190258","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274916
Shridevi R. Angadi, R. Nanjundaswamy, N. Srinivas, R. S. Ananda Murthy
In this paper, a shunt active power filter scheme is proposed for a three phase system feeding a non-linear load. The system represents the HV generator used in high power radiology equipment. Hysteresis current control is used, which controls the operation such that a sinusoidal current is drawn from the source. The proposed method also reduces the THD, thus improving the power quality. The compensating currents are injected in phase opposition at the point of common contact to cancel out the harmonic currents in ac lines. The Hysteresis current control is used because it is simple and easy to implement. The simulation is carried out using MATLAB-SIMULINK software, whose results are displayed.
{"title":"A hysteresis current control based shunt current compensation scheme for power quality improvement in high power radiology applications","authors":"Shridevi R. Angadi, R. Nanjundaswamy, N. Srinivas, R. S. Ananda Murthy","doi":"10.1109/ICPACE.2015.7274916","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274916","url":null,"abstract":"In this paper, a shunt active power filter scheme is proposed for a three phase system feeding a non-linear load. The system represents the HV generator used in high power radiology equipment. Hysteresis current control is used, which controls the operation such that a sinusoidal current is drawn from the source. The proposed method also reduces the THD, thus improving the power quality. The compensating currents are injected in phase opposition at the point of common contact to cancel out the harmonic currents in ac lines. The Hysteresis current control is used because it is simple and easy to implement. The simulation is carried out using MATLAB-SIMULINK software, whose results are displayed.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"40 1","pages":"53-58"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90244047","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274911
N. Lahari, H. Shetty
Wind energy and Solar energy, are considered to be the main attributes of renewable energy for electricity generation, are growing at faster rate for the last two-three decades. This paper pertains to the study of a novel integration of wind energy from grid connected Permanent Magnet Synchronous Generator (PMSG) and solar energy systems. In order to extract maximum power from Wind energy and solar energy systems a novel technique, known as Maximum Power Point Tracking (MPPT) technique, has been adopted, in this paper.Additionally, to maintain and sustain the continuity of supply to the load on demand at all times, the outputs of wind energy and solar energy are integrated suitably. For wind generator, the overall operation is based on the estimation of the speed, that is basically a sensor-less rotor speed estimator, which in fact avoids all mechanical sensors. The rotor speed so estimated, is used to control the turbine speed by maintaining the input dc quantities (Voltage and Current) for boost converter. Simulation studies of the proposed system are carried out using MATLAB / Simulink platform, and results are presented.
{"title":"Integration of grid connected PMG wind energy and solar energy systems using different control stratagies","authors":"N. Lahari, H. Shetty","doi":"10.1109/ICPACE.2015.7274911","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274911","url":null,"abstract":"Wind energy and Solar energy, are considered to be the main attributes of renewable energy for electricity generation, are growing at faster rate for the last two-three decades. This paper pertains to the study of a novel integration of wind energy from grid connected Permanent Magnet Synchronous Generator (PMSG) and solar energy systems. In order to extract maximum power from Wind energy and solar energy systems a novel technique, known as Maximum Power Point Tracking (MPPT) technique, has been adopted, in this paper.Additionally, to maintain and sustain the continuity of supply to the load on demand at all times, the outputs of wind energy and solar energy are integrated suitably. For wind generator, the overall operation is based on the estimation of the speed, that is basically a sensor-less rotor speed estimator, which in fact avoids all mechanical sensors. The rotor speed so estimated, is used to control the turbine speed by maintaining the input dc quantities (Voltage and Current) for boost converter. Simulation studies of the proposed system are carried out using MATLAB / Simulink platform, and results are presented.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"137 1","pages":"23-27"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79736318","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274986
M. D. Sharath Kumar, A. D. Srinivasan
An Electrostatic Precipitator (ESP) is the most efficient device to capture fly ash. The performance of an ESP can be determined by Voltage-Current (V-I) characteristics which will reflect upon the collection efficiency. In this paper, a new approach based on Finite Difference Method (FDM) has been utilized for the simulation of V-I characteristics of an ESP under clean air and dust loaded conditions. The present simulation work with FDM is computationally simple as one grid is employed for solving the Poisson's equation and Current continuity equation which gives sufficiently accurate results. Further, V-I measurements for one of the ESPs were conducted by the author at Raichur Thermal Power Station (RTPS) in India and the simulated results were compared with the measured ones. The results for clean air were validated with the published experimental data and the present method has been compared with the other methods.
{"title":"Studies on the electrical characteristics of a thermal power plant Electrostatic Precipitator","authors":"M. D. Sharath Kumar, A. D. Srinivasan","doi":"10.1109/ICPACE.2015.7274986","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274986","url":null,"abstract":"An Electrostatic Precipitator (ESP) is the most efficient device to capture fly ash. The performance of an ESP can be determined by Voltage-Current (V-I) characteristics which will reflect upon the collection efficiency. In this paper, a new approach based on Finite Difference Method (FDM) has been utilized for the simulation of V-I characteristics of an ESP under clean air and dust loaded conditions. The present simulation work with FDM is computationally simple as one grid is employed for solving the Poisson's equation and Current continuity equation which gives sufficiently accurate results. Further, V-I measurements for one of the ESPs were conducted by the author at Raichur Thermal Power Station (RTPS) in India and the simulated results were compared with the measured ones. The results for clean air were validated with the published experimental data and the present method has been compared with the other methods.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"6 1","pages":"429-435"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89376452","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274949
Jayaprakash Sabarad, G. Kulkarni
The aim of this paper is to analyze the comparative relationship between Space-Vector Pulse Width Modulation (SVPWM) and Sinusoidal Pulse Width Modulation (SPWM) for three phase multilevel inverters. Detailed comparative analysis of Total Harmonic Distortion (THD) for both modulation strategies analyzed. The converter technologies are receiving increased attention due to high power applications. This increased attention is probably due to the fact that the output waveforms are much improved over those of the three-phase carrier based sinusoidal pulse width modulation (SPWM).There are various methods of control and modulation methods used for Multi-level inverters. These techniques classified according to switching frequency. The pulse width modulation strategies affects the voltage balancing in the DC bus capacitors as well as the ripple current rating and the capacitance value. Choosing the modulation scheme based upon the control need at hand is very important as it decides the harmonic content of the output voltage waveform. In industries slowly there is an increasing trend of using SVPWM because of their easier digital realization and better dc bus utilization. In this paper both Sinusoidal PWM and SVPWM feeding a RL load are considered. These techniques are studied through simulation using MATLAB/SIMULINK software and the performance of both the techniques are compared.
{"title":"Comparative analysis of SVPWM and SPWM techniques for multilevel inverter","authors":"Jayaprakash Sabarad, G. Kulkarni","doi":"10.1109/ICPACE.2015.7274949","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274949","url":null,"abstract":"The aim of this paper is to analyze the comparative relationship between Space-Vector Pulse Width Modulation (SVPWM) and Sinusoidal Pulse Width Modulation (SPWM) for three phase multilevel inverters. Detailed comparative analysis of Total Harmonic Distortion (THD) for both modulation strategies analyzed. The converter technologies are receiving increased attention due to high power applications. This increased attention is probably due to the fact that the output waveforms are much improved over those of the three-phase carrier based sinusoidal pulse width modulation (SPWM).There are various methods of control and modulation methods used for Multi-level inverters. These techniques classified according to switching frequency. The pulse width modulation strategies affects the voltage balancing in the DC bus capacitors as well as the ripple current rating and the capacitance value. Choosing the modulation scheme based upon the control need at hand is very important as it decides the harmonic content of the output voltage waveform. In industries slowly there is an increasing trend of using SVPWM because of their easier digital realization and better dc bus utilization. In this paper both Sinusoidal PWM and SVPWM feeding a RL load are considered. These techniques are studied through simulation using MATLAB/SIMULINK software and the performance of both the techniques are compared.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"15 1","pages":"232-237"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78573290","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 : 2015-08-01DOI: 10.1109/ICPACE.2015.7274940
V. S. Kirthika Devi, R. Patrão, P. Sreekanth, Garima Ramole, A. Sreekumar
In this paper, design and implementation of staircase modulation technique on an existing topology of single phase five level Cascaded H-Bridge multilevel inverter using reduced number of switches is done. The existing Cascaded H-Bridge multilevel inverter has two sources and five switches thus reducing the total harmonic distortion and electromagnetic interference. The two sources being DC are replaced by Photovoltaic modules and are interfaced with the inverter through a closed loop Proportional Integral controlled Buck-Boost Converter. Implementation of closed loop Proportional Integral controller maintains a nearly constant output voltage from the Buck-Boost converter. Implementation of staircase modulation reduces the total harmonic distortion to the least possible and an LC filter at the AC output side of the inverter further reduces it drastically. The analysis has been done for both R and RL loads. The simulation is done using MATLAB/Simulink 2011 software in order to meet the objectives stated above.
{"title":"Implementation of staircase modulation on a five level Cascaded H-Bridge multilevel inverter and interfacing with Photovoltaic modules","authors":"V. S. Kirthika Devi, R. Patrão, P. Sreekanth, Garima Ramole, A. Sreekumar","doi":"10.1109/ICPACE.2015.7274940","DOIUrl":"https://doi.org/10.1109/ICPACE.2015.7274940","url":null,"abstract":"In this paper, design and implementation of staircase modulation technique on an existing topology of single phase five level Cascaded H-Bridge multilevel inverter using reduced number of switches is done. The existing Cascaded H-Bridge multilevel inverter has two sources and five switches thus reducing the total harmonic distortion and electromagnetic interference. The two sources being DC are replaced by Photovoltaic modules and are interfaced with the inverter through a closed loop Proportional Integral controlled Buck-Boost Converter. Implementation of closed loop Proportional Integral controller maintains a nearly constant output voltage from the Buck-Boost converter. Implementation of staircase modulation reduces the total harmonic distortion to the least possible and an LC filter at the AC output side of the inverter further reduces it drastically. The analysis has been done for both R and RL loads. The simulation is done using MATLAB/Simulink 2011 software in order to meet the objectives stated above.","PeriodicalId":6644,"journal":{"name":"2015 International Conference on Power and Advanced Control Engineering (ICPACE)","volume":"27 1","pages":"185-190"},"PeriodicalIF":0.0,"publicationDate":"2015-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81505730","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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