The UAV flight plan should comprehensively consider the influence of factors such as the slope environment, slope safety level, geological conditions, and UAV flying conditions. The +360 sections of the slope are graded for safety, and the technical safety index of the slope is finally assessed as Class three, so as to determine the fine inspection plan. The slope was carefully inspected by drone inspection equipment, and the development of the disease on the surface of the slope can be clearly seen. Among them, there is a rock exposed at point three and there is a risk of slipping, which should be focused on in the follow-up inspection. focus on. Points four, five, six and eight are weathered rocks, and the surface has been partially peeled off, there is a risk of continued peeling, which should be paid attention to in the follow-up inspection work. It brings convenience to the inspection of highway slopes and has a wide application prospect.
{"title":"Research on intelligent inspection of high slopes on Yuqian Road based on UAV","authors":"Ling Tan, S. Deng, Herman Huang, Rong He","doi":"10.1117/12.2658188","DOIUrl":"https://doi.org/10.1117/12.2658188","url":null,"abstract":"The UAV flight plan should comprehensively consider the influence of factors such as the slope environment, slope safety level, geological conditions, and UAV flying conditions. The +360 sections of the slope are graded for safety, and the technical safety index of the slope is finally assessed as Class three, so as to determine the fine inspection plan. The slope was carefully inspected by drone inspection equipment, and the development of the disease on the surface of the slope can be clearly seen. Among them, there is a rock exposed at point three and there is a risk of slipping, which should be focused on in the follow-up inspection. focus on. Points four, five, six and eight are weathered rocks, and the surface has been partially peeled off, there is a risk of continued peeling, which should be paid attention to in the follow-up inspection work. It brings convenience to the inspection of highway slopes and has a wide application prospect.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122522031","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}
With the rapid development of the world economy, the number and scale of road transportation infrastructure have grown rapidly. In recent years, a large number of highway tunnels have been put into use. The prevalence of water seepage diseases in road tunnels poses a major hazard to the safety of personnel and vehicles. Water seepage detection has been one of the high-priority research topics for tunnel inspection. Previous studies have mainly used a single visible camera as a sensor to detect water leakage areas in images, which is extremely sensitive to insufficient lighting in the tunnel. Considering the existence of temperature difference between the water leakage area and the normal area, we used an infrared camera to collect tunnel lining images and constructed a water leakage area identification algorithm based on the temperature difference between the water leakage area and the normal area using K-means clustering algorithm and low-pass filtering algorithm based on the temperature field distribution of infrared images. This study can provide a new idea for the rapid identification of tunnel water leakage.
{"title":"Research on infrared feature recognition algorithm for water leakage in highway tunnels","authors":"Jian Liu, Chengshun Lv, Zhi-hua Zhao, Yunfeng Ding, Quanyi Xie","doi":"10.1117/12.2658365","DOIUrl":"https://doi.org/10.1117/12.2658365","url":null,"abstract":"With the rapid development of the world economy, the number and scale of road transportation infrastructure have grown rapidly. In recent years, a large number of highway tunnels have been put into use. The prevalence of water seepage diseases in road tunnels poses a major hazard to the safety of personnel and vehicles. Water seepage detection has been one of the high-priority research topics for tunnel inspection. Previous studies have mainly used a single visible camera as a sensor to detect water leakage areas in images, which is extremely sensitive to insufficient lighting in the tunnel. Considering the existence of temperature difference between the water leakage area and the normal area, we used an infrared camera to collect tunnel lining images and constructed a water leakage area identification algorithm based on the temperature difference between the water leakage area and the normal area using K-means clustering algorithm and low-pass filtering algorithm based on the temperature field distribution of infrared images. This study can provide a new idea for the rapid identification of tunnel water leakage.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126526079","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}
It is of great practical significance to identify the state of bus bunching in advance so as to take reasonable measures. In order to improve the identification performance, a identification model based on Extreme Gradient Boosting (XGBoost) is proposed for multi classification of bus bunching rate. Firstly, using variance filtering and recursive feature elimination to screen the factors affecting the bus bunching rate. Secondly, SMOTE algorithm is used to deal with the data imbalance. Finally, XGBoost model is used to identify the multi classification of the bus bunching rate, and this paper compares the proposed model with other models. The research shows that the XGBoost model proposed in this paper has the best results in measurement indicators of identification performance, which verifies the applicability of the model to accurately identify the categories of bus bunching rate.
{"title":"Multi-class identification of urban bus bunching rate based on XGBoost","authors":"Qian Liu, Mei Xiao, X. Ming, Hongtao Huang","doi":"10.1117/12.2658598","DOIUrl":"https://doi.org/10.1117/12.2658598","url":null,"abstract":"It is of great practical significance to identify the state of bus bunching in advance so as to take reasonable measures. In order to improve the identification performance, a identification model based on Extreme Gradient Boosting (XGBoost) is proposed for multi classification of bus bunching rate. Firstly, using variance filtering and recursive feature elimination to screen the factors affecting the bus bunching rate. Secondly, SMOTE algorithm is used to deal with the data imbalance. Finally, XGBoost model is used to identify the multi classification of the bus bunching rate, and this paper compares the proposed model with other models. The research shows that the XGBoost model proposed in this paper has the best results in measurement indicators of identification performance, which verifies the applicability of the model to accurately identify the categories of bus bunching rate.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"12460 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130426766","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}
In China, the smart transportation project mode is top-down, dominated by the government, participated by enterprises, and used by the public. The behavior strategy choice of different stakeholders will affect the process and effect of the smart transportation project. This paper takes the stakeholders of intelligent transportation as the research object, analyzes the game under different behavior strategies from the two stages of construction and operation, and finds out the best behavior for all parties of the project, to ensure smooth progress and effect of the intelligent transportation project.
{"title":"A game study of stakeholders of smart transportation project in China","authors":"Dong Wang, Yingjie Hu","doi":"10.1117/12.2657921","DOIUrl":"https://doi.org/10.1117/12.2657921","url":null,"abstract":"In China, the smart transportation project mode is top-down, dominated by the government, participated by enterprises, and used by the public. The behavior strategy choice of different stakeholders will affect the process and effect of the smart transportation project. This paper takes the stakeholders of intelligent transportation as the research object, analyzes the game under different behavior strategies from the two stages of construction and operation, and finds out the best behavior for all parties of the project, to ensure smooth progress and effect of the intelligent transportation project.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127823006","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}
In this paper, an evaluation method for the combined action of automatic emergency braking (AEB) and adaptive cruise control (ACC) was proposed. To evaluate the effectiveness of the test method, the test scenarios of “stationary vehicle in the curve” and “front car cut-in” were constructed. The tests were conducted on dry asphalt roads and the ISO 19206 standard was used as a vehicle target, and the combined effects of the AEB and ACC systems were carried out according to the test cases. By analyzing the test data such as speed, deceleration, relative speed to the front car, and relative longitudinal distance from the front car, the impact of ACC and AEB on occupant comfort and driving safety under the joint action of AEB and ACC was obtained.
{"title":"An evaluation study on the combined effects of the ACC and AEB systems","authors":"Xingfei Xing, Kai Wang","doi":"10.1117/12.2657893","DOIUrl":"https://doi.org/10.1117/12.2657893","url":null,"abstract":"In this paper, an evaluation method for the combined action of automatic emergency braking (AEB) and adaptive cruise control (ACC) was proposed. To evaluate the effectiveness of the test method, the test scenarios of “stationary vehicle in the curve” and “front car cut-in” were constructed. The tests were conducted on dry asphalt roads and the ISO 19206 standard was used as a vehicle target, and the combined effects of the AEB and ACC systems were carried out according to the test cases. By analyzing the test data such as speed, deceleration, relative speed to the front car, and relative longitudinal distance from the front car, the impact of ACC and AEB on occupant comfort and driving safety under the joint action of AEB and ACC was obtained.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"251 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132482158","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}
Jianli Duan, Rui Wang, Shulian Zhao, Mengxia Hu, Hua Chen, Chuzhao Li, Hao Wu, Pengfei Bai, Yi Wang, Keqiang Li
In this paper, we propose a new automatic test and evaluation method that can be used for autonomous driving systems in virtual simulation test. Aiming at the problems that the existing automated test method cannot guarantee coverage and validity of the test scenarios, and evaluation lacks the consideration of the complete development life cycle of the systems, we firstly introduce a new scenarios generation method that can generate scenarios with higher overall effectivity on the premise of ensuring coverage. Then, an integrated test platform is constructed, in which the components can be automatically invoked by test scripts. Finally, the automated iterative regression testing is used to ensure the effectiveness of the whole development and test process. The application and verification of a level three (L3) Traffic Jam Pilot (TJP) system is carried out on the above-stated method. The result shows that the proposed method can effectively detect system defects and significantly improve test efficiency.
{"title":"Automated scenario generation and iterative regression testing method for autonomous driving systems","authors":"Jianli Duan, Rui Wang, Shulian Zhao, Mengxia Hu, Hua Chen, Chuzhao Li, Hao Wu, Pengfei Bai, Yi Wang, Keqiang Li","doi":"10.1117/12.2657984","DOIUrl":"https://doi.org/10.1117/12.2657984","url":null,"abstract":"In this paper, we propose a new automatic test and evaluation method that can be used for autonomous driving systems in virtual simulation test. Aiming at the problems that the existing automated test method cannot guarantee coverage and validity of the test scenarios, and evaluation lacks the consideration of the complete development life cycle of the systems, we firstly introduce a new scenarios generation method that can generate scenarios with higher overall effectivity on the premise of ensuring coverage. Then, an integrated test platform is constructed, in which the components can be automatically invoked by test scripts. Finally, the automated iterative regression testing is used to ensure the effectiveness of the whole development and test process. The application and verification of a level three (L3) Traffic Jam Pilot (TJP) system is carried out on the above-stated method. The result shows that the proposed method can effectively detect system defects and significantly improve test efficiency.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122360821","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}
With the “Belt and Road” initiative, the relationship between various regions and countries has become increasingly close, and container transportation has gradually developed into one of the important modes of cargo transportation. Among them, Sea-rail Combined Transport (SCT) is the most promising logistics transportation method. With the globalization of the world economy and the rapid development, Sea-rail Combined Transport is about to gradually develop into a universal international cargo transportation method. In recent years, in order to ensure that China can become an emerging maritime power, the Ministry of Transport has successively issued many policies to support it, expressly requiring the strengthening of the development of the container Sea-rail Combined Transport port station. Although Zhoushan Port has become one of Chinese important foreign trade ports, today with huge competition pressure, there is still a gap with the predetermined target. How to find the development focus and breakthrough point of Zhoushan Port is to make Ningbo Zhoushan Port’s sea rail inter-modal is an important task for building the strongest brand. In this paper, we discussed the development status of container Sea-rail Combined Transport in Zhoushan Port of Ningbo, and the modified index curve method is used to predict its future traffic demand. At the same time, the necessity and innovation of developing Sea-rail Combined Transport in Zhoushan Port are explored, and corresponding suggestions are put forward to promote the prosperity and development of Zhoushan Port.
{"title":"Analysis on the development strategy of sea and railway combined transportation of container in Ningbo Zhoushan Port","authors":"T. Fang","doi":"10.1117/12.2657866","DOIUrl":"https://doi.org/10.1117/12.2657866","url":null,"abstract":"With the “Belt and Road” initiative, the relationship between various regions and countries has become increasingly close, and container transportation has gradually developed into one of the important modes of cargo transportation. Among them, Sea-rail Combined Transport (SCT) is the most promising logistics transportation method. With the globalization of the world economy and the rapid development, Sea-rail Combined Transport is about to gradually develop into a universal international cargo transportation method. In recent years, in order to ensure that China can become an emerging maritime power, the Ministry of Transport has successively issued many policies to support it, expressly requiring the strengthening of the development of the container Sea-rail Combined Transport port station. Although Zhoushan Port has become one of Chinese important foreign trade ports, today with huge competition pressure, there is still a gap with the predetermined target. How to find the development focus and breakthrough point of Zhoushan Port is to make Ningbo Zhoushan Port’s sea rail inter-modal is an important task for building the strongest brand. In this paper, we discussed the development status of container Sea-rail Combined Transport in Zhoushan Port of Ningbo, and the modified index curve method is used to predict its future traffic demand. At the same time, the necessity and innovation of developing Sea-rail Combined Transport in Zhoushan Port are explored, and corresponding suggestions are put forward to promote the prosperity and development of Zhoushan Port.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129447083","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}
With the continuous development of my country's economy, my country's road traffic is also constantly being constructed, and people's traffic travel has also shown a diversified development, which makes people put forward higher requirements for safe travel. For a long time, due to the lack of understanding of the disaster mechanism and causes of road traffic accidents in my country, the ability to prevent and control road traffic accidents in my country has been affected to a large extent. The quality of life and economic development of residents have been seriously affected. In order to reduce the probability of traffic accidents, it is very important to carry out effective risk assessment of road traffic accidents, evaluate the risk level of roads and formulate corresponding management countermeasures. Finally, taking a road as an example, the constructed road traffic risk assessment model is applied.
{"title":"Research on transportation risk prediction method based on coupling analysis","authors":"Mingkuan Wu, Huaili Chen","doi":"10.1117/12.2657849","DOIUrl":"https://doi.org/10.1117/12.2657849","url":null,"abstract":"With the continuous development of my country's economy, my country's road traffic is also constantly being constructed, and people's traffic travel has also shown a diversified development, which makes people put forward higher requirements for safe travel. For a long time, due to the lack of understanding of the disaster mechanism and causes of road traffic accidents in my country, the ability to prevent and control road traffic accidents in my country has been affected to a large extent. The quality of life and economic development of residents have been seriously affected. In order to reduce the probability of traffic accidents, it is very important to carry out effective risk assessment of road traffic accidents, evaluate the risk level of roads and formulate corresponding management countermeasures. Finally, taking a road as an example, the constructed road traffic risk assessment model is applied.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128127244","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}
Zhaoxing Li, Y. Liang, Yixin Liu, B. Wang, Junsoo Che
Using the 1D/3D co-simulation method, aiming at the proposed heating scheme of the air conditioning system of the EMU, a 1D model of the heating system and control logic was built in the 1D simulation software Amesim. In the 3D simulation software STAR-CCM+, the 3D model of the ventilation system and the passenger room was built. The heating performance of the scheme and the temperature uniformity of the passenger room was verified through co-simulation. The results show that, compared with 1D simulation or 3D simulation alone, 1D/3D co-simulation integrates the previous independent models and can take into account the parameter performance and structural characteristics of the simulation object. It is more intuitive to observe the transient changes of each part of the system during the simulation process to realize the control of each part of the heating scheme, discover design omissions in advance, and improve the design efficiency, which is of positive significance.
{"title":"Research on air conditioning system of EMU based on 1D and 3D co-simulation","authors":"Zhaoxing Li, Y. Liang, Yixin Liu, B. Wang, Junsoo Che","doi":"10.1117/12.2658419","DOIUrl":"https://doi.org/10.1117/12.2658419","url":null,"abstract":"Using the 1D/3D co-simulation method, aiming at the proposed heating scheme of the air conditioning system of the EMU, a 1D model of the heating system and control logic was built in the 1D simulation software Amesim. In the 3D simulation software STAR-CCM+, the 3D model of the ventilation system and the passenger room was built. The heating performance of the scheme and the temperature uniformity of the passenger room was verified through co-simulation. The results show that, compared with 1D simulation or 3D simulation alone, 1D/3D co-simulation integrates the previous independent models and can take into account the parameter performance and structural characteristics of the simulation object. It is more intuitive to observe the transient changes of each part of the system during the simulation process to realize the control of each part of the heating scheme, discover design omissions in advance, and improve the design efficiency, which is of positive significance.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125338007","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}
In order to study the influence of multi-dimensional seismic on the seismic isolation structure considering the rotational component, a high-rise steel frame structure model was established by finite element software, and the seismic isolation layer was set up in the base layer, the sixth layer, the eleventh layer and the sixteenth layer of the structure, forming four seismic isolation structures, and the dynamic response analysis of the multidimensional seismic on the structure considering the rotation component and only the translation component was completed. The results show that considering the coupling of different seismic rotation components and translational components compared with only translational seismic components, the structural response is increased, among which the structural response is the largest when the six components of seismic vibration act at the same time, the maximum acceleration of the top layer, the maximum horizontal displacement between layers, and the maximum column end shear force increase are 17%, 22%, and 36%, respectively, and the structural response is second when the seismic rocking component and the translational component are coupled, with an increase of 12%, 18%, and 29%, respectively. The structural response of the coupling of the torsional component of the seismic vibration and the translation component was the smallest, with an increase of 8%, 15%, and 20%, respectively. The sensitivity of the seismic isolation structure to the rotational component of the seismic vibration is less than that of the non-seismic isolation structure, and the lower the position of the seismic isolation layer, the weaker the sensitivity.
{"title":"Response analysis of multidimensional seismic vibration considering rotational component to high-rise steel frame seismic isolation structure","authors":"Huawei Jiang, Sun Tong, Zhang Hao, Liu Hongnan","doi":"10.1117/12.2658356","DOIUrl":"https://doi.org/10.1117/12.2658356","url":null,"abstract":"In order to study the influence of multi-dimensional seismic on the seismic isolation structure considering the rotational component, a high-rise steel frame structure model was established by finite element software, and the seismic isolation layer was set up in the base layer, the sixth layer, the eleventh layer and the sixteenth layer of the structure, forming four seismic isolation structures, and the dynamic response analysis of the multidimensional seismic on the structure considering the rotation component and only the translation component was completed. The results show that considering the coupling of different seismic rotation components and translational components compared with only translational seismic components, the structural response is increased, among which the structural response is the largest when the six components of seismic vibration act at the same time, the maximum acceleration of the top layer, the maximum horizontal displacement between layers, and the maximum column end shear force increase are 17%, 22%, and 36%, respectively, and the structural response is second when the seismic rocking component and the translational component are coupled, with an increase of 12%, 18%, and 29%, respectively. The structural response of the coupling of the torsional component of the seismic vibration and the translation component was the smallest, with an increase of 8%, 15%, and 20%, respectively. The sensitivity of the seismic isolation structure to the rotational component of the seismic vibration is less than that of the non-seismic isolation structure, and the lower the position of the seismic isolation layer, the weaker the sensitivity.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125382772","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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