Pub Date : 2018-04-01DOI: 10.1109/IGBSG.2018.8393548
Aminuddin Rizal, Yu-Chen Lin, Yuan-Hsiang Lin
Contactless healthcare system is becoming a new trend to solve the existing healthcare system limitations. High flexibility and accessibility are the main advantages of contactless measurements. In this paper, we proposed a contactless healthcare kiosk for intelligent building application. The Remote Imaging Photoplethysmography (rIPPG) based framework to measure multiple human's vital signs, including pulse rate (PR), respiratory rate (RR), and systolic blood pressure (SBP) was developed to fulfill the performance requirement with a personal computer. Our experimental results show the Mean Absolute Error (MAE) of each measured parameters are 1.7 BPM, 0.41 BPM and 8.15 mmHg for PR, RR, and SBP respectively compared with clinical apparatus. These statistical numbers show the feasibility of using the contactless based system to measure numerous vital signs and also meet the requirements of standard healthcare device.
{"title":"Contactless vital signs measurement for self-service healthcare kiosk in intelligent building","authors":"Aminuddin Rizal, Yu-Chen Lin, Yuan-Hsiang Lin","doi":"10.1109/IGBSG.2018.8393548","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393548","url":null,"abstract":"Contactless healthcare system is becoming a new trend to solve the existing healthcare system limitations. High flexibility and accessibility are the main advantages of contactless measurements. In this paper, we proposed a contactless healthcare kiosk for intelligent building application. The Remote Imaging Photoplethysmography (rIPPG) based framework to measure multiple human's vital signs, including pulse rate (PR), respiratory rate (RR), and systolic blood pressure (SBP) was developed to fulfill the performance requirement with a personal computer. Our experimental results show the Mean Absolute Error (MAE) of each measured parameters are 1.7 BPM, 0.41 BPM and 8.15 mmHg for PR, RR, and SBP respectively compared with clinical apparatus. These statistical numbers show the feasibility of using the contactless based system to measure numerous vital signs and also meet the requirements of standard healthcare device.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123248907","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 : 2018-04-01DOI: 10.1109/IGBSG.2018.8393522
Hejun Yang, Yeyu Zhang, Wang Lei, Dabo Zhang
Wind energy is stochastic and intermittent in nature, so the steady state operation of power systems is subject to different disturbances for the large scale integration of wind energy. And the intermittency of wind energy has a direct effect on the power system frequency. In this paper, an equivalent load method, a system state simulation technique, and the frequency characteristic of power system are used to evaluate the reliability of generating systems containing wind energy considering the steady state frequency characteristics based on the sequential Monte Carlo technique. The proposed method in this study is applied to the Roy Billinton Test System (RBTS). The results show that the presented method can not only reflect the contribution of wind power to the overall power system reliability, but also the negative impact of wind power fluctuation on power system reliability.
{"title":"Adequacy evaluation of power system with wind energy considering steady-state frequency response","authors":"Hejun Yang, Yeyu Zhang, Wang Lei, Dabo Zhang","doi":"10.1109/IGBSG.2018.8393522","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393522","url":null,"abstract":"Wind energy is stochastic and intermittent in nature, so the steady state operation of power systems is subject to different disturbances for the large scale integration of wind energy. And the intermittency of wind energy has a direct effect on the power system frequency. In this paper, an equivalent load method, a system state simulation technique, and the frequency characteristic of power system are used to evaluate the reliability of generating systems containing wind energy considering the steady state frequency characteristics based on the sequential Monte Carlo technique. The proposed method in this study is applied to the Roy Billinton Test System (RBTS). The results show that the presented method can not only reflect the contribution of wind power to the overall power system reliability, but also the negative impact of wind power fluctuation on power system reliability.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129322742","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 : 2018-04-01DOI: 10.1109/IGBSG.2018.8393544
Wenhua Li, Huanruo Qi, Zhang He
In order to improve the inherent limitations of integrator reset, voltage bias and poor performance with nonlinear load in the traditional bipolar one-cycle controlled inverter, a compound control strategy is proposed, which combines unipolar one-cycle control at the front stage and dual-loop control, capacitor voltage outer loop and the inductor current inner loop, at the rear stage. The inverter under unipolar one-cycle control has strong ability to resist power disturbance, and there is no integrator reset and voltage offset problem. The voltage and current dual-loop control improves the dynamic performance and the nonlinear load carrrying capacity of the inverter. The working principle of the inverter under the compound control strategy is described in detail. The simulation and experiment results show that the inverter has good output characteristics under this strategy, and the effectiveness of the strategy is demonstrated.
{"title":"Research on inverter under one-cycle-dual-loop compound control","authors":"Wenhua Li, Huanruo Qi, Zhang He","doi":"10.1109/IGBSG.2018.8393544","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393544","url":null,"abstract":"In order to improve the inherent limitations of integrator reset, voltage bias and poor performance with nonlinear load in the traditional bipolar one-cycle controlled inverter, a compound control strategy is proposed, which combines unipolar one-cycle control at the front stage and dual-loop control, capacitor voltage outer loop and the inductor current inner loop, at the rear stage. The inverter under unipolar one-cycle control has strong ability to resist power disturbance, and there is no integrator reset and voltage offset problem. The voltage and current dual-loop control improves the dynamic performance and the nonlinear load carrrying capacity of the inverter. The working principle of the inverter under the compound control strategy is described in detail. The simulation and experiment results show that the inverter has good output characteristics under this strategy, and the effectiveness of the strategy is demonstrated.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123969859","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 : 2018-04-01DOI: 10.1109/IGBSG.2018.8393536
R. Wai, Quansheng Zhang
Microgrid (MG) usually operates in medium/low voltage systems, where the line impedance parameters are mainly resistive, and traditional P-f/Q-U droop control is no longer applicable. According to the line parameters characteristics of the off-grid MG with medium/low voltage, the P-U/Q-f droop control is adopted in this study, where the virtual complex impedance composed of a virtual negative inductance and a virtual resistance is introduced in the control loop. The virtual negative inductance is used to reduce the power coupling caused by the inductive component of the system impedance. The virtual resistance is implemented to enhance the resistive component and adjust the impedance matching degree for raising the accuracy of power sharing. However, the power sharing is still affected by the system hardware parameters, meanwhile, the voltage deviation caused by the droop control and the virtual impedance exists. In this study, a novel voltage stabilization and power sharing control method based on the virtual complex impedance is investigated to achieve accurate power sharing without the impact of hardware parameters variations and to improve the voltage quality. Numerical simulations are provided to verify the effectiveness of the proposed control method in comparison with traditional frameworks.
{"title":"Design of voltage stabilization and power sharing control method via virtual complex impedance","authors":"R. Wai, Quansheng Zhang","doi":"10.1109/IGBSG.2018.8393536","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393536","url":null,"abstract":"Microgrid (MG) usually operates in medium/low voltage systems, where the line impedance parameters are mainly resistive, and traditional P-f/Q-U droop control is no longer applicable. According to the line parameters characteristics of the off-grid MG with medium/low voltage, the P-U/Q-f droop control is adopted in this study, where the virtual complex impedance composed of a virtual negative inductance and a virtual resistance is introduced in the control loop. The virtual negative inductance is used to reduce the power coupling caused by the inductive component of the system impedance. The virtual resistance is implemented to enhance the resistive component and adjust the impedance matching degree for raising the accuracy of power sharing. However, the power sharing is still affected by the system hardware parameters, meanwhile, the voltage deviation caused by the droop control and the virtual impedance exists. In this study, a novel voltage stabilization and power sharing control method based on the virtual complex impedance is investigated to achieve accurate power sharing without the impact of hardware parameters variations and to improve the voltage quality. Numerical simulations are provided to verify the effectiveness of the proposed control method in comparison with traditional frameworks.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133332818","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}
High connectivity, Low power, Low cost Advanced Metering Infrastructure (HiLL AMI) targets connectivity difficulty at the last mile with smart meters and achieves 99-percent-plus connectivity at low cost and consumes low power. There is a last-mile networking problem at the user end, the small physical segment starting from user smart meter to the point where the meter gets hooked up to the utility's main communications network. When a meter is hidden inside the private space, behind building walls, the connection becomes difficult. HiLL AMI provides cost-effective last-mile solution for AMI implementation by utility companies anywhere in the world. HiLL AMI is a technology for the utility's metering network to maintain stable connection to all users' smart meters in order to get everyone involved in our gross effort in carbon reduction.
{"title":"High connectivity, low power, low cost advanced metering infrastructure","authors":"Ping-heng Li, Cheng-Hung Tsai, Chun-Huang Chen, Po-Chen Chen","doi":"10.1109/IGBSG.2018.8393554","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393554","url":null,"abstract":"High connectivity, Low power, Low cost Advanced Metering Infrastructure (HiLL AMI) targets connectivity difficulty at the last mile with smart meters and achieves 99-percent-plus connectivity at low cost and consumes low power. There is a last-mile networking problem at the user end, the small physical segment starting from user smart meter to the point where the meter gets hooked up to the utility's main communications network. When a meter is hidden inside the private space, behind building walls, the connection becomes difficult. HiLL AMI provides cost-effective last-mile solution for AMI implementation by utility companies anywhere in the world. HiLL AMI is a technology for the utility's metering network to maintain stable connection to all users' smart meters in order to get everyone involved in our gross effort in carbon reduction.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133191855","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 : 2018-04-01DOI: 10.1109/IGBSG.2018.8393560
Tao Zhang, Jiaying Zhang, Lingyun Wang, Dongfang Zhang
Using in thermal load dominant mode will restrict the flexible output of the micro-combustion engine for the combined heat and power supply system (CCHP), this paper established a joint model of multi-energy flow micro-grid for intelligent community combined with the time-sharing price response and compression chiller. The mathematical model of the maximum integrated operating income of the system, which is based on the installation of the compression chiller to decouple the system cooling and consider the influence of the time-sharing price on user's electrical habits. And the Shuffled Frog Leaping Algorithm (SFLA) is used to optimize the cooling load model after the user load response. The results show that the SFLA algorithm can obtain the faster global optimal solution and the better fitness value of the model.
{"title":"Optimal economic dispatch for intelligent community micro-grid considering demand response","authors":"Tao Zhang, Jiaying Zhang, Lingyun Wang, Dongfang Zhang","doi":"10.1109/IGBSG.2018.8393560","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393560","url":null,"abstract":"Using in thermal load dominant mode will restrict the flexible output of the micro-combustion engine for the combined heat and power supply system (CCHP), this paper established a joint model of multi-energy flow micro-grid for intelligent community combined with the time-sharing price response and compression chiller. The mathematical model of the maximum integrated operating income of the system, which is based on the installation of the compression chiller to decouple the system cooling and consider the influence of the time-sharing price on user's electrical habits. And the Shuffled Frog Leaping Algorithm (SFLA) is used to optimize the cooling load model after the user load response. The results show that the SFLA algorithm can obtain the faster global optimal solution and the better fitness value of the model.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122060597","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 : 2018-04-01DOI: 10.1109/IGBSG.2018.8393547
R. Wai, Yu Wang
This study analyzes the power coupling in a weak power grid, and designs a novel decoupling method for the power with multi harmonic frequency on the dc bus. By modifying the reference values of dc series split-capacitors, the system control structure can be simplified, and the multi-frequency-coupled power decoupling can be realized. Moreover, a notch filter is introduced into the dc voltage feedback path for further reducing the influence of the power coupling on the inverter output current quality. The proposed method can achieve the objective of the multi-frequency-coupled power decoupling, even under a weak power-grid environment. Finally, numerical simulations are provided to verify the effectiveness of the proposed method.
{"title":"Power decoupling strategy for single-phase grid-connected inverter under weak power grid","authors":"R. Wai, Yu Wang","doi":"10.1109/IGBSG.2018.8393547","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393547","url":null,"abstract":"This study analyzes the power coupling in a weak power grid, and designs a novel decoupling method for the power with multi harmonic frequency on the dc bus. By modifying the reference values of dc series split-capacitors, the system control structure can be simplified, and the multi-frequency-coupled power decoupling can be realized. Moreover, a notch filter is introduced into the dc voltage feedback path for further reducing the influence of the power coupling on the inverter output current quality. The proposed method can achieve the objective of the multi-frequency-coupled power decoupling, even under a weak power-grid environment. Finally, numerical simulations are provided to verify the effectiveness of the proposed method.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132021641","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 : 2018-04-01DOI: 10.1109/IGBSG.2018.8393535
Kasper L. J⊘rgensen, Maria C. Mira, Zhe Zhang, M. Andersen
A theoretical loss analysis is presented for GaN switches, for which conduction and switching losses are considered, and for planar transformers, where winding and core losses are considered. The analysis is then used to make a comparison of the losses in the partial parallel isolated full bridge boost converter and the isolated full bridge boost converter.
{"title":"Loss analysis of GaN based partial parallel isolated bidirectional full bridge boost converter","authors":"Kasper L. J⊘rgensen, Maria C. Mira, Zhe Zhang, M. Andersen","doi":"10.1109/IGBSG.2018.8393535","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393535","url":null,"abstract":"A theoretical loss analysis is presented for GaN switches, for which conduction and switching losses are considered, and for planar transformers, where winding and core losses are considered. The analysis is then used to make a comparison of the losses in the partial parallel isolated full bridge boost converter and the isolated full bridge boost converter.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116764102","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 : 2018-04-01DOI: 10.1109/IGBSG.2018.8393550
Shan Cheng, Peng Gao
Irrational planning and improper allocation of charging stations for electric vehicles is likely to result in severely negative effects on the stable and operation of the distribution system. This study aims to investigate the optimal planning of charging stations based on an adaptive particle swarm optimization (APSO) algorithm. An optimization model for optimal planning problem is established for minimizing the voltage stability index of the system, which takes into account of the charging demand and convenience of electric vehicles as well as the investment economy of charging stations, the economic operation of the distribution system and its power quality. In order to handle the non-linear optimization problem with multiple constraints, an APSO with good convergence accuracy and speed is proposed and successfully applied the problem. The simulation results based on the IEEE 33-bus system validate the feasibility and effectiveness of the problem method for optimally planning charging stations.
{"title":"Optimal allocation of charging stations for electric vehicles in the distribution system","authors":"Shan Cheng, Peng Gao","doi":"10.1109/IGBSG.2018.8393550","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393550","url":null,"abstract":"Irrational planning and improper allocation of charging stations for electric vehicles is likely to result in severely negative effects on the stable and operation of the distribution system. This study aims to investigate the optimal planning of charging stations based on an adaptive particle swarm optimization (APSO) algorithm. An optimization model for optimal planning problem is established for minimizing the voltage stability index of the system, which takes into account of the charging demand and convenience of electric vehicles as well as the investment economy of charging stations, the economic operation of the distribution system and its power quality. In order to handle the non-linear optimization problem with multiple constraints, an APSO with good convergence accuracy and speed is proposed and successfully applied the problem. The simulation results based on the IEEE 33-bus system validate the feasibility and effectiveness of the problem method for optimally planning charging stations.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129413361","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 : 2018-04-01DOI: 10.1109/IGBSG.2018.8393561
P. I. H. Karstensen, Kevin Tomas Mañez, Zhe Zhang
A control strategy for an energy management system (EMS) of a household nanogrid is presented in this paper. The proposed EMS is based on a state diagram. A three port converter (TPC) with direct storage capability is chosen and the states together with the state transitions are defined. The state diagram signals to two algorithms of which one calculates the battery current reference and the other allows the photovoltaic (PV) system to operate at the maximum power point (MPP) at all times. An extensive model has been implemented in MATLAB/Simulink using generic models to test the proposed control method. Results show a system which at all times follows a specified power exchange with the grid with a overshoot in power of 500W and worst case settling time of 500ms.
{"title":"Control of a three-port DC-DC converter for grid connected PV-battery applications","authors":"P. I. H. Karstensen, Kevin Tomas Mañez, Zhe Zhang","doi":"10.1109/IGBSG.2018.8393561","DOIUrl":"https://doi.org/10.1109/IGBSG.2018.8393561","url":null,"abstract":"A control strategy for an energy management system (EMS) of a household nanogrid is presented in this paper. The proposed EMS is based on a state diagram. A three port converter (TPC) with direct storage capability is chosen and the states together with the state transitions are defined. The state diagram signals to two algorithms of which one calculates the battery current reference and the other allows the photovoltaic (PV) system to operate at the maximum power point (MPP) at all times. An extensive model has been implemented in MATLAB/Simulink using generic models to test the proposed control method. Results show a system which at all times follows a specified power exchange with the grid with a overshoot in power of 500W and worst case settling time of 500ms.","PeriodicalId":356367,"journal":{"name":"2018 3rd International Conference on Intelligent Green Building and Smart Grid (IGBSG)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121178252","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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