Pub Date : 2002-12-11DOI: 10.1109/MMSE.2002.1181601
Liang-Jie Zhang, Lurng-Kuo Liu, D. Xie, James S. Lipscomb, Qun Zhou
TV program rating provides television programmers and commercial advertisers an estimate of audience size and composition and are a barometer of peoples' viewing habits. We introduce a digital TV commerce solution powered by HotMedia TV. We propose a method and system for TV audience estimates and program rating using a per-object-granularity tracking mechanism for interactive TV content tracking. The major components of the proposed tracking architecture are an interactive TV content creation tool, a tracking information delivery framework, an interactive TV content receiver and tracking servers. Our mechanism enables a broadcast station or a rating agency to automatically perform tracking functions in real time, based on viewer's action as well as on the content of audiovisual programming.
{"title":"A per-object-granularity tracking mechanism for interactive TV viewership estimation and program rating","authors":"Liang-Jie Zhang, Lurng-Kuo Liu, D. Xie, James S. Lipscomb, Qun Zhou","doi":"10.1109/MMSE.2002.1181601","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181601","url":null,"abstract":"TV program rating provides television programmers and commercial advertisers an estimate of audience size and composition and are a barometer of peoples' viewing habits. We introduce a digital TV commerce solution powered by HotMedia TV. We propose a method and system for TV audience estimates and program rating using a per-object-granularity tracking mechanism for interactive TV content tracking. The major components of the proposed tracking architecture are an interactive TV content creation tool, a tracking information delivery framework, an interactive TV content receiver and tracking servers. Our mechanism enables a broadcast station or a rating agency to automatically perform tracking functions in real time, based on viewer's action as well as on the content of audiovisual programming.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122511699","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 : 2002-12-11DOI: 10.1109/MMSE.2002.1181629
M. F. Khan, Halima Ghafoor, R. Paul
In this paper, we discuss various characteristics of multimedia data and the effect of the network on the required quality of service for multimedia data in terms of synchronization. Scheduling transmission of multimedia information for synchronized delivery, over broadband networks with limited resources, and is identified as an NP-hard problem. We introduce two parameters to measure the performance of end-to-end synchronization protocols for networked distributed multimedia applications. We propose various heuristic scheduling algorithms for multimedia synchronization and compare their performance.
{"title":"QoS-based synchronization of multimedia document streams","authors":"M. F. Khan, Halima Ghafoor, R. Paul","doi":"10.1109/MMSE.2002.1181629","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181629","url":null,"abstract":"In this paper, we discuss various characteristics of multimedia data and the effect of the network on the required quality of service for multimedia data in terms of synchronization. Scheduling transmission of multimedia information for synchronized delivery, over broadband networks with limited resources, and is identified as an NP-hard problem. We introduce two parameters to measure the performance of end-to-end synchronization protocols for networked distributed multimedia applications. We propose various heuristic scheduling algorithms for multimedia synchronization and compare their performance.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129659877","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 : 2002-12-11DOI: 10.1109/MMSE.2002.1181608
Song Wang, Kwei-Jay Lin, Song Peng
In multimedia systems with soft real-time constraints, tasks must be guaranteed a certain system bandwidth so they can provide an acceptable performance to their users. In this paper a bandwidth exchange (BWE) protocol is proposed to manage resource sharing issues between tasks running on systems with CPU bandwidth reservation. The approach improves an earlier protocol, bandwidth inheritance (BWI), in that it provides bandwidth isolation not only between independent groups of tasks, but also between any two tasks within the same resource sharing group. BWE thus provides fairer resource allocation than BWI.
{"title":"BWE: a resource sharing protocol for multimedia systems with bandwidth reservation","authors":"Song Wang, Kwei-Jay Lin, Song Peng","doi":"10.1109/MMSE.2002.1181608","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181608","url":null,"abstract":"In multimedia systems with soft real-time constraints, tasks must be guaranteed a certain system bandwidth so they can provide an acceptable performance to their users. In this paper a bandwidth exchange (BWE) protocol is proposed to manage resource sharing issues between tasks running on systems with CPU bandwidth reservation. The approach improves an earlier protocol, bandwidth inheritance (BWI), in that it provides bandwidth isolation not only between independent groups of tasks, but also between any two tasks within the same resource sharing group. BWE thus provides fairer resource allocation than BWI.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133793302","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 : 2002-12-11DOI: 10.1109/MMSE.2002.1181634
A. Papagiannis, D. Lioupis, S. Egglezos
Video-on-demand systems will be the video rental shops of the future. One of the great challenges in the VoD domain is optimizing the cost/performance ratio of the designed system. We present a clustered, high performance, high availability and low cost VoD system, which is based on a network of personal computers. We experimented with state-of-the-art video compression algorithms like MPEG-4, although our system is video format independent. We succeeded in serving 90 near DVD quality streams per node, with great potential for expansion. We show that the key factor of this success is the migration of performance demanding procedures to clients of the system, which possess the appropriate processing power to support them. Furthermore, we present the results of our experiments with systems of 2 and 3 server nodes that prove the linearity between the number of server nodes and the number of served streams.
{"title":"Design and implementation of a low-cost clustered video server using a network of personal computers","authors":"A. Papagiannis, D. Lioupis, S. Egglezos","doi":"10.1109/MMSE.2002.1181634","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181634","url":null,"abstract":"Video-on-demand systems will be the video rental shops of the future. One of the great challenges in the VoD domain is optimizing the cost/performance ratio of the designed system. We present a clustered, high performance, high availability and low cost VoD system, which is based on a network of personal computers. We experimented with state-of-the-art video compression algorithms like MPEG-4, although our system is video format independent. We succeeded in serving 90 near DVD quality streams per node, with great potential for expansion. We show that the key factor of this success is the migration of performance demanding procedures to clients of the system, which possess the appropriate processing power to support them. Furthermore, we present the results of our experiments with systems of 2 and 3 server nodes that prove the linearity between the number of server nodes and the number of served streams.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125042542","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 : 2002-12-11DOI: 10.1109/MMSE.2002.1181621
H. Eidenberger, C. Breiteneder
This paper describes the user interface framework of the VizIR project (Eidenberger et al., 2002). VizIR is an open project to develop a Java-based, extendible and well-documented asset framework for visual information retrieval. The paper includes a description of the visual components and their class structure, the communication between panels as well as between visual components and query engines. Visual components include media panels, controls and renderer classes. The panels communicate through media events. Communication of user interfaces and query engines is based on the multimedia retrieval markup language (MRML). MRML is an XML-based language that was developed by the University of Geneva. To be usable with our querying paradigm, we extend MRML with additional elements. The paper contains a short implementation section with details on the Java components used, Java 3D graphics libraries (GLAJava and Java3D) and Java XML parsing. Finally, an appendix is included containing the MRML extension.
本文描述了VizIR项目的用户界面框架(Eidenberger et al.， 2002)。VizIR是一个开放项目，用于开发基于java的、可扩展的、文档完备的可视化信息检索资产框架。本文描述了可视化组件及其类结构、面板之间的通信以及可视化组件与查询引擎之间的通信。可视化组件包括媒体面板、控件和渲染器类。这些小组通过媒体活动进行沟通。用户界面和查询引擎之间的通信基于多媒体检索标记语言(MRML)。MRML是日内瓦大学开发的一种基于xml的语言。为了使用我们的查询范例，我们用附加的元素扩展了MRML。本文包含了一个简短的实现部分，详细介绍了所使用的Java组件、Java3D图形库(GLAJava和Java3D)和Java XML解析。最后，还包括一个包含MRML扩展的附录。
{"title":"A framework for user interface design in visual information retrieval","authors":"H. Eidenberger, C. Breiteneder","doi":"10.1109/MMSE.2002.1181621","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181621","url":null,"abstract":"This paper describes the user interface framework of the VizIR project (Eidenberger et al., 2002). VizIR is an open project to develop a Java-based, extendible and well-documented asset framework for visual information retrieval. The paper includes a description of the visual components and their class structure, the communication between panels as well as between visual components and query engines. Visual components include media panels, controls and renderer classes. The panels communicate through media events. Communication of user interfaces and query engines is based on the multimedia retrieval markup language (MRML). MRML is an XML-based language that was developed by the University of Geneva. To be usable with our querying paradigm, we extend MRML with additional elements. The paper contains a short implementation section with details on the Java components used, Java 3D graphics libraries (GLAJava and Java3D) and Java XML parsing. Finally, an appendix is included containing the MRML extension.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127163131","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 : 2002-12-11DOI: 10.1109/MMSE.2002.1181625
Liang-Jie Zhang, Jen-Yao Chung, Lurng-Kuo Liu, James S. Lipscomb, Qun Zhou
We present an advanced architecture for selectively inserting interactive content into a live TV broadcast anti tracking the usage of the inserted content by client viewers. Specifically, we propose a multi-level interactive content preview mechanism, agent-based information exchange mechanism and E-commerce enablement technology powered by an Interactive Content Creation Engine (ICCE). Also, we introduce two types of mapping lists for scheduling and for an intelligent decision maker based oil the transaction monitoring and multi-level content preview. We propose that the improved live interactive content insertion method and system will be especially useful for building interactive TV e-commerce solutions.
{"title":"An integrated live interactive content insertion system for digital TV commerce","authors":"Liang-Jie Zhang, Jen-Yao Chung, Lurng-Kuo Liu, James S. Lipscomb, Qun Zhou","doi":"10.1109/MMSE.2002.1181625","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181625","url":null,"abstract":"We present an advanced architecture for selectively inserting interactive content into a live TV broadcast anti tracking the usage of the inserted content by client viewers. Specifically, we propose a multi-level interactive content preview mechanism, agent-based information exchange mechanism and E-commerce enablement technology powered by an Interactive Content Creation Engine (ICCE). Also, we introduce two types of mapping lists for scheduling and for an intelligent decision maker based oil the transaction monitoring and multi-level content preview. We propose that the improved live interactive content insertion method and system will be especially useful for building interactive TV e-commerce solutions.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130186857","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 : 2002-12-11DOI: 10.1109/MMSE.2002.1181613
H. Djenidi, A. Ramdane-Cherif, C. Tadj, N. Lévy
Multimodal feature fusion natural human-computer interaction involves complex intelligent architectures facing unexpected errors and mistakes made by users. These architectures should react to events that occur simultaneously with eventual redundancy from different input media. Intelligent agent based genetic architectures for multimedia multimodal dialog protocols are proposed. Global agents are decomposed into their relevant components, and each element is modeled separately using timed colored Petri nets. The elementary models are then linked together to obtain the full architecture. Generic components of the application are then monitored by an agent based expert system to perform dynamic changes in reconfiguration, adaptation and evolution at the architectural level. For validation purposes, the proposed multi-agent architecture and its dynamic reconfiguration are respectively applied on practical examples.
{"title":"Dynamic agent based reconfiguration of multimedia multimodal architecture","authors":"H. Djenidi, A. Ramdane-Cherif, C. Tadj, N. Lévy","doi":"10.1109/MMSE.2002.1181613","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181613","url":null,"abstract":"Multimodal feature fusion natural human-computer interaction involves complex intelligent architectures facing unexpected errors and mistakes made by users. These architectures should react to events that occur simultaneously with eventual redundancy from different input media. Intelligent agent based genetic architectures for multimedia multimodal dialog protocols are proposed. Global agents are decomposed into their relevant components, and each element is modeled separately using timed colored Petri nets. The elementary models are then linked together to obtain the full architecture. Generic components of the application are then monitored by an agent based expert system to perform dynamic changes in reconfiguration, adaptation and evolution at the architectural level. For validation purposes, the proposed multi-agent architecture and its dynamic reconfiguration are respectively applied on practical examples.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126985672","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 : 2002-12-11DOI: 10.1109/MMSE.2002.1181627
Gang Wu, E. Chong, R. Givan
We study the problem of using proxy servers to stream video stored at a geographically separate location. The separation of the server and the storage introduces a nonnegligible delay in retrieving video frames in real time. To ensure network stability we use an additive-increase and multiplicative-decrease transport protocol to support the streaming process. We develop an effective scheme, to achieve high, consistent streaming quality. The heart of the scheme is the control of buffer occupancy at the proxy server We model the buffer as a bilinear dynamical system with Poisson disturbance and develop three buffer controllers. Our empirical study proves the effectiveness of the streaming scheme. Moreover we find that the controllers exploiting the buffer model demonstrate performance significantly superior to that of model-free controllers in overcoming the adverse impact of the control delay.
{"title":"Streaming stored video over AIMD transport protocols","authors":"Gang Wu, E. Chong, R. Givan","doi":"10.1109/MMSE.2002.1181627","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181627","url":null,"abstract":"We study the problem of using proxy servers to stream video stored at a geographically separate location. The separation of the server and the storage introduces a nonnegligible delay in retrieving video frames in real time. To ensure network stability we use an additive-increase and multiplicative-decrease transport protocol to support the streaming process. We develop an effective scheme, to achieve high, consistent streaming quality. The heart of the scheme is the control of buffer occupancy at the proxy server We model the buffer as a bilinear dynamical system with Poisson disturbance and develop three buffer controllers. Our empirical study proves the effectiveness of the streaming scheme. Moreover we find that the controllers exploiting the buffer model demonstrate performance significantly superior to that of model-free controllers in overcoming the adverse impact of the control delay.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127585344","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 : 2002-12-11DOI: 10.1109/MMSE.2002.1181609
Q. Zheng, Yongling Song, Jun Liu, Dehong Yu
Distance learning systems over satellite and ground wired network provide a multimedia study environment and unlimited learning opportunities. Learning on demand has become an efficient and popular learning mode. Many learning on demand systems based on IP networks have been implemented and applied, such as real system, media server and IBM Learning Space, etc. However, they neither meet a user's reservation request for education resources, nor can they provide a resource optimization scheduling scheme when many people wish to play the same kind of education resources at the same time. In this paper, we propose a new and practical resource reservation and scheduling algorithm for learning on demand based on satellite and ground IP network (RODS for short). In RODS, users provide a request for resources to the server station via ground Internet, then RODS employs the improved maximal queue length (IMQL) algorithm to schedule reservation requests and then generate an optimized sending scheme of multimedia courseware. RODS sends the corresponding resources to remote sites via satellite transmission. The prototype of RODS has already been implemented and tested on the platforms of satellite and CERNET (China Educational and Research Network), and the algorithm was proved to be efficient, flexible and practical in supporting learning on demand.
{"title":"A resource reservation and scheduling algorithm for learning on-demand system over satellite and cable network","authors":"Q. Zheng, Yongling Song, Jun Liu, Dehong Yu","doi":"10.1109/MMSE.2002.1181609","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181609","url":null,"abstract":"Distance learning systems over satellite and ground wired network provide a multimedia study environment and unlimited learning opportunities. Learning on demand has become an efficient and popular learning mode. Many learning on demand systems based on IP networks have been implemented and applied, such as real system, media server and IBM Learning Space, etc. However, they neither meet a user's reservation request for education resources, nor can they provide a resource optimization scheduling scheme when many people wish to play the same kind of education resources at the same time. In this paper, we propose a new and practical resource reservation and scheduling algorithm for learning on demand based on satellite and ground IP network (RODS for short). In RODS, users provide a request for resources to the server station via ground Internet, then RODS employs the improved maximal queue length (IMQL) algorithm to schedule reservation requests and then generate an optimized sending scheme of multimedia courseware. RODS sends the corresponding resources to remote sites via satellite transmission. The prototype of RODS has already been implemented and tested on the platforms of satellite and CERNET (China Educational and Research Network), and the algorithm was proved to be efficient, flexible and practical in supporting learning on demand.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116022849","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 : 2002-12-11DOI: 10.1109/MMSE.2002.1181623
Jian Zhang, Y. Pei, D. Xie
The media-on-demand (MOD), derived from traditional Video-on-Demand, is a significant value-added service for operators in the present and the foreseeable future. This paper introduces a flexible content protection system for MOD, named on demand content protection (ODCP). The ODCP system does not rely on the conventional conditional access system, and can be applied in both Internet and cable environment. It supports unicast and multicast content distribution and its player can be either an application on PC or a device such as a set-top box. In ODCP, contents are protected from end to end. A user cannot play the content without an entitlement from the MOD service provider. A usage rule can be bound with the entitlement, so that the service provider can specify how and when the user could use the content.
{"title":"A flexible content protection system for media-on-demand","authors":"Jian Zhang, Y. Pei, D. Xie","doi":"10.1109/MMSE.2002.1181623","DOIUrl":"https://doi.org/10.1109/MMSE.2002.1181623","url":null,"abstract":"The media-on-demand (MOD), derived from traditional Video-on-Demand, is a significant value-added service for operators in the present and the foreseeable future. This paper introduces a flexible content protection system for MOD, named on demand content protection (ODCP). The ODCP system does not rely on the conventional conditional access system, and can be applied in both Internet and cable environment. It supports unicast and multicast content distribution and its player can be either an application on PC or a device such as a set-top box. In ODCP, contents are protected from end to end. A user cannot play the content without an entitlement from the MOD service provider. A usage rule can be bound with the entitlement, so that the service provider can specify how and when the user could use the content.","PeriodicalId":201661,"journal":{"name":"Fourth International Symposium on Multimedia Software Engineering, 2002. Proceedings.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116886186","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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