Pub Date : 2014-04-26DOI: 10.1109/ICIST.2014.6920358
Huailin Shu, Yuan Xu
PID neural network (PIDNN) is a new type of feed-forward neural network which has been found by Huai-lin Shu, in which neural network is integrated with PID control law. The priori knowledge of PID control can be used to choose the initial weights to make sure that PIDNN control systems are initial stable. Without priori knowledge and using the random initial weights, initial stable of the PIDNN system may be uncertain. The paper proposes an improved algorithm which has momentum factor to overcome the local minimum of the PIDNN. The distinct improvement of the PIDNN control system is proved by simulation results.
{"title":"Application of additional momentum in PID neural network","authors":"Huailin Shu, Yuan Xu","doi":"10.1109/ICIST.2014.6920358","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920358","url":null,"abstract":"PID neural network (PIDNN) is a new type of feed-forward neural network which has been found by Huai-lin Shu, in which neural network is integrated with PID control law. The priori knowledge of PID control can be used to choose the initial weights to make sure that PIDNN control systems are initial stable. Without priori knowledge and using the random initial weights, initial stable of the PIDNN system may be uncertain. The paper proposes an improved algorithm which has momentum factor to overcome the local minimum of the PIDNN. The distinct improvement of the PIDNN control system is proved by simulation results.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125531229","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920351
Ya-jun Chen, Jianhua Peng, Kai-zhi Huang, Xiaofang Gong
In wireless location area, the estimation precision of the TOA (the time of arrival) is low because it underutilizes the time-frequency characteristics of the OFDM signal in the OFDM system. To solve this problem, in this paper, a multipath delay estimation model based on frequency domain phase offset (FDP-MDE) is proposed. And then, a grouped joint time delay estimation algorithm (GJ-TDE) is proposed according to features of the LTE system. Simulation results show that the root mean square error (RMSE) of the GJ-TDE algorithm is 5.5034m smaller than that of the synchronization algorithm under the condition that the signal-to-noise ratio (SNR) is 0dB and the sampling interval is 8.
{"title":"A multipath delay estimation model and algorithm in OFDM systems","authors":"Ya-jun Chen, Jianhua Peng, Kai-zhi Huang, Xiaofang Gong","doi":"10.1109/ICIST.2014.6920351","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920351","url":null,"abstract":"In wireless location area, the estimation precision of the TOA (the time of arrival) is low because it underutilizes the time-frequency characteristics of the OFDM signal in the OFDM system. To solve this problem, in this paper, a multipath delay estimation model based on frequency domain phase offset (FDP-MDE) is proposed. And then, a grouped joint time delay estimation algorithm (GJ-TDE) is proposed according to features of the LTE system. Simulation results show that the root mean square error (RMSE) of the GJ-TDE algorithm is 5.5034m smaller than that of the synchronization algorithm under the condition that the signal-to-noise ratio (SNR) is 0dB and the sampling interval is 8.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117007028","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}
As a key device in nuclear station, the steam generator is vulnerable to certain kinds of damages, which make it necessary to check the generator annually. However, it is impossible for human to finish the examine because of that the tremendous tubes inside the generator makes its inner space too crowded. In this paper, we introduced a novel designed climbing robot system which is competent to the work. The main part of the robot system is a vehicle which can moves inside the steam generator carrying a PT Arm. Four cameras are installed in the vehicle and PT Arm to send the real time video back for analysis. We built a control panel as the interface for users to control the vehicle and a cabinet as the container of all the processors int the control system. Experiments show that our system works stably inside the steam generator.
{"title":"A novel nuclear station inspection robot","authors":"Qingsong Liu, G. Wang, Yachao Dong, Pengfei Liu, Jianquan Sun, Xinyu Wu, Yangsheng Xu","doi":"10.1109/ICIST.2014.6920568","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920568","url":null,"abstract":"As a key device in nuclear station, the steam generator is vulnerable to certain kinds of damages, which make it necessary to check the generator annually. However, it is impossible for human to finish the examine because of that the tremendous tubes inside the generator makes its inner space too crowded. In this paper, we introduced a novel designed climbing robot system which is competent to the work. The main part of the robot system is a vehicle which can moves inside the steam generator carrying a PT Arm. Four cameras are installed in the vehicle and PT Arm to send the real time video back for analysis. We built a control panel as the interface for users to control the vehicle and a cabinet as the container of all the processors int the control system. Experiments show that our system works stably inside the steam generator.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129500725","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920586
Yunqi Hu, Shaosheng Dai, Jin-song Liu
The gray level transformation combining with local standard deviation is an effective and efficient way to enhance the contrast of gray images without much calculating burden. Conventional algorithms always calculate pixel's local standard deviation in a rectangular area centered to itself, which fail to take the natural traits of the image's content into consideration. The algorithm we propose uses fuzzy clustering to cluster pixels into different types, hence to extract the feature of the image's content. And modify the pixel combing the standard deviation of the cluster it belongs to with the global one, which enables us to more effectively enhance the image's contrast. Experimental results show that the proposed method can improve image's contrast more significantly than the conventional gray level transformation algorithm.
{"title":"Contrast enhancement based on fuzzy clustering","authors":"Yunqi Hu, Shaosheng Dai, Jin-song Liu","doi":"10.1109/ICIST.2014.6920586","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920586","url":null,"abstract":"The gray level transformation combining with local standard deviation is an effective and efficient way to enhance the contrast of gray images without much calculating burden. Conventional algorithms always calculate pixel's local standard deviation in a rectangular area centered to itself, which fail to take the natural traits of the image's content into consideration. The algorithm we propose uses fuzzy clustering to cluster pixels into different types, hence to extract the feature of the image's content. And modify the pixel combing the standard deviation of the cluster it belongs to with the global one, which enables us to more effectively enhance the image's contrast. Experimental results show that the proposed method can improve image's contrast more significantly than the conventional gray level transformation algorithm.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128518423","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920602
Hong Chen, Fen-fen Tian, G. Cao, Yan Liu, Nan-ning Xie, Tao Lin
A high maneuverable mobile platform for wall climbing robot was developed based on Electromagnetic adsorption principle. The Dual-body mechanism was designed to improve maneuverability performance effectively. The mobile platform included electromagnetic adsorption mechanism and wheeled moving dual-body mechanism. By means of Solidworks three-dimensional model of mobile platform was established, and dynamic Simulations of obstacle negotiation on steel wall were performed. The simulation results indicated that the mobile platform not only can possess steering ability, but also can cross L-form and inverted L-form obstacle. The mechanism design provided high reference value to research wall climbing robot.
{"title":"Mechanism design and dynamic simulation of high maneuverable mobile platform for wall-climbing robot","authors":"Hong Chen, Fen-fen Tian, G. Cao, Yan Liu, Nan-ning Xie, Tao Lin","doi":"10.1109/ICIST.2014.6920602","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920602","url":null,"abstract":"A high maneuverable mobile platform for wall climbing robot was developed based on Electromagnetic adsorption principle. The Dual-body mechanism was designed to improve maneuverability performance effectively. The mobile platform included electromagnetic adsorption mechanism and wheeled moving dual-body mechanism. By means of Solidworks three-dimensional model of mobile platform was established, and dynamic Simulations of obstacle negotiation on steel wall were performed. The simulation results indicated that the mobile platform not only can possess steering ability, but also can cross L-form and inverted L-form obstacle. The mechanism design provided high reference value to research wall climbing robot.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128622248","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920406
G. Fabbri, F. M. Frattale Mascioli
The main objective of this paper is to present a Territorial System of Sustainable Mobility developed by the Pole for Sustainable Mobility (POMOS) and its partners, in the framework of a regional R&D project. This project, named "Bonifica 2.0", aims at the touristic exploitation of the Pontine territory, a large naturalistic area in the region of Lazio in Italy, configuring mixed routes (waterways, channels and bicycle/pedestrian paths) out of the road network paths and expanding the concept of land sustainable mobility to waterways and coastal lakes that characterize all the Pontine area. The goal is the restoration of historical, archaeological and natural zones in an innovative way and with the use of new technologies and environmentally sustainable means of transportation. A mobility system integrated with the mainland has been studied and will be implemented. The system will allow to manage the fleet and the infrastructures assuring safe routes and the exploitation of historical / cultural sites. Moreover the system will be used as best practice of an Integrated Territorial System of Sustainable Mobility under development in Europe and to be used as a reference case to be proposed and reproduced to other similar areas in the world. The system and its main components are described in this paper illustrating what has been achieved till now.
{"title":"An integrated sustainable mobility territorial system","authors":"G. Fabbri, F. M. Frattale Mascioli","doi":"10.1109/ICIST.2014.6920406","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920406","url":null,"abstract":"The main objective of this paper is to present a Territorial System of Sustainable Mobility developed by the Pole for Sustainable Mobility (POMOS) and its partners, in the framework of a regional R&D project. This project, named \"Bonifica 2.0\", aims at the touristic exploitation of the Pontine territory, a large naturalistic area in the region of Lazio in Italy, configuring mixed routes (waterways, channels and bicycle/pedestrian paths) out of the road network paths and expanding the concept of land sustainable mobility to waterways and coastal lakes that characterize all the Pontine area. The goal is the restoration of historical, archaeological and natural zones in an innovative way and with the use of new technologies and environmentally sustainable means of transportation. A mobility system integrated with the mainland has been studied and will be implemented. The system will allow to manage the fleet and the infrastructures assuring safe routes and the exploitation of historical / cultural sites. Moreover the system will be used as best practice of an Integrated Territorial System of Sustainable Mobility under development in Europe and to be used as a reference case to be proposed and reproduced to other similar areas in the world. The system and its main components are described in this paper illustrating what has been achieved till now.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124014116","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920524
Di Wu, Qingsong Zhu, Jianjun Wang, Yaoqin Xie, Lei Wang
Image haze removal has become an important researching direction in computer vision because of the development of computer vision system and its increasing demand. Images acquired in bad weather, such as haze and fog, are seriously degraded by the scatting of the atmosphere, which makes the image color gray, reduces the contrast and make the object features difficult to identify. The bad weather not only lead to the variation of the visual effect of the image, but also to the disadvantage of the post processing to the image, as well as the inconvenience of all kinds of instruments which rely on optical imaging, such as satellite remote sensing system, aerial photo system, outdoor monitoring system and object identification system. That's the reason why they need enhancement and restoration for the improvement of the visual effects and convenience of post processing. This paper sums up the status of image haze removal methods. After that, quantitative and qualitative evaluations of these techniques are presented and the challenges of the existing haze removal method are summarized. Finally, we proposed some expectations to the future research in the field of image haze removal.
{"title":"Image haze removal: Status, challenges and prospects","authors":"Di Wu, Qingsong Zhu, Jianjun Wang, Yaoqin Xie, Lei Wang","doi":"10.1109/ICIST.2014.6920524","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920524","url":null,"abstract":"Image haze removal has become an important researching direction in computer vision because of the development of computer vision system and its increasing demand. Images acquired in bad weather, such as haze and fog, are seriously degraded by the scatting of the atmosphere, which makes the image color gray, reduces the contrast and make the object features difficult to identify. The bad weather not only lead to the variation of the visual effect of the image, but also to the disadvantage of the post processing to the image, as well as the inconvenience of all kinds of instruments which rely on optical imaging, such as satellite remote sensing system, aerial photo system, outdoor monitoring system and object identification system. That's the reason why they need enhancement and restoration for the improvement of the visual effects and convenience of post processing. This paper sums up the status of image haze removal methods. After that, quantitative and qualitative evaluations of these techniques are presented and the challenges of the existing haze removal method are summarized. Finally, we proposed some expectations to the future research in the field of image haze removal.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114077506","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 overcome the disadvantages of traditional Functional Endoscopic Sinus Surgery (FESS), a novel passive endoscopic robot for sinus surgery is designed in this paper. This paper mainly focuses on the design of the prototype of a novel passive endoscopic robot and the lock methods of the passive joints. The design of the robot is divided into two parts-the position arm and the end-effector with an endoscope. A parallelogram based passive position arm is proposed and detailed analyzed then, and a three spherical joints based end-effector is proposed and detailed analyzed. Hereafter, different lock methods for joints are discussed and evaluated for both passive position arm and end-effector. For passive position arm, a gear-like lock mechanism is proposed and detailed analyzed, and a bladder-spring based lock mechanism is proposed for the end-effector. The mechanical model of bladder-spring based lock mechanism is derived to guide the detailed design of the prototype of the robot.
{"title":"Design of a novel passive endoscopic robot for sinus surgery","authors":"Peng Zhang, Yucheng He, Ying Hu, Xilong Hou, L. Zhu, Jianwei Zhang","doi":"10.1109/ICIST.2014.6920606","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920606","url":null,"abstract":"In order to overcome the disadvantages of traditional Functional Endoscopic Sinus Surgery (FESS), a novel passive endoscopic robot for sinus surgery is designed in this paper. This paper mainly focuses on the design of the prototype of a novel passive endoscopic robot and the lock methods of the passive joints. The design of the robot is divided into two parts-the position arm and the end-effector with an endoscope. A parallelogram based passive position arm is proposed and detailed analyzed then, and a three spherical joints based end-effector is proposed and detailed analyzed. Hereafter, different lock methods for joints are discussed and evaluated for both passive position arm and end-effector. For passive position arm, a gear-like lock mechanism is proposed and detailed analyzed, and a bladder-spring based lock mechanism is proposed for the end-effector. The mechanical model of bladder-spring based lock mechanism is derived to guide the detailed design of the prototype of the robot.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125693520","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920342
Dao-Lai Cheng, Shoupeng Wan, Linzhang Ji
Aircraft cockpit voice signals recorded by aircraft black boxes are one of the key evidences to analyze and diagnose the flight faults. Firstly, the paper describes information fusion principle, and constructs three-level information fusion model. Then, many typical cockpit voice signals as examples (such as wind shear, ground proximity warning, take off form warning, fire alarm, background sound of stick shaker, over speed warning, background ground of high speed with translation, and so on), their characteristic warehouse have been set up. Thirdly, the new analysis and diagnosis methods for cockpit voice signals has been put forward according to production rule and information fusion principle. Finally, binary system diagnostic trees on cockpit voice signals are formed and some analysis and diagnosis results are obtained.
{"title":"Analysis & fault diagnosis of cockpit voice signals based on information fusion","authors":"Dao-Lai Cheng, Shoupeng Wan, Linzhang Ji","doi":"10.1109/ICIST.2014.6920342","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920342","url":null,"abstract":"Aircraft cockpit voice signals recorded by aircraft black boxes are one of the key evidences to analyze and diagnose the flight faults. Firstly, the paper describes information fusion principle, and constructs three-level information fusion model. Then, many typical cockpit voice signals as examples (such as wind shear, ground proximity warning, take off form warning, fire alarm, background sound of stick shaker, over speed warning, background ground of high speed with translation, and so on), their characteristic warehouse have been set up. Thirdly, the new analysis and diagnosis methods for cockpit voice signals has been put forward according to production rule and information fusion principle. Finally, binary system diagnostic trees on cockpit voice signals are formed and some analysis and diagnosis results are obtained.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121858682","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920348
Wenqun Xiu, Xiaoming Li
Artificial monitoring is no longer able to match the rapid growth of cybercrime, it is in great need to develop a new spatial analysis technology which allows emergency events to get rapidly and accurately locked in real environment, furthermore, to establish correlative analysis model for cybercrime prevention strategy. On the other hand, Geography information system has been changed virtually in data structure, coordinate system and analysis model due to the “uncertainty and hyper-dimension” characteristics of network object and behavior. In this paper, the spatial rules of typical cybercrime are explored on base of GIS with Internet searching and IP tracking technology: (1) Setup spatial database through IP searching based on criminal evidence. (2)Extend GIS data-structure and spatial models, add network dimension and virtual attribution to realize dynamic connection between cyber and real space. (3)Design cybercrime monitoring and prevention system to discover the cyberspace logics based on spatial analysis.
{"title":"The design of cybercrime spatial analysis system","authors":"Wenqun Xiu, Xiaoming Li","doi":"10.1109/ICIST.2014.6920348","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920348","url":null,"abstract":"Artificial monitoring is no longer able to match the rapid growth of cybercrime, it is in great need to develop a new spatial analysis technology which allows emergency events to get rapidly and accurately locked in real environment, furthermore, to establish correlative analysis model for cybercrime prevention strategy. On the other hand, Geography information system has been changed virtually in data structure, coordinate system and analysis model due to the “uncertainty and hyper-dimension” characteristics of network object and behavior. In this paper, the spatial rules of typical cybercrime are explored on base of GIS with Internet searching and IP tracking technology: (1) Setup spatial database through IP searching based on criminal evidence. (2)Extend GIS data-structure and spatial models, add network dimension and virtual attribution to realize dynamic connection between cyber and real space. (3)Design cybercrime monitoring and prevention system to discover the cyberspace logics based on spatial analysis.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115785663","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：