In this paper we present a framework for autonomic QoS provisioning for VoIP services. The central role is held by a Measurement Based Admission Control algorithm which incorporates three innovations. First, the mathematical underpin- ing obeys a non-parametric approach, removing the dependency on a priori assumed characteristics of the underlying stochastic process, i.e. those of the work arrival process. Thus, we tackle a major issue of common parametric MBAC. The second and the third enhancement is embodied in the combination of a closed-loop control based on perceived QoS. Typically, MBAC algorithms do not validate there decision and thats why many algorithms miss QoS targets due to non- stationaries in work arrival processes. As a metric for perfor- mance evaluation we devised a new approach based on the Emodel, an ITU-T standard for quantifying QoS assessment based on human perception. The contribution is the mathematical framework for both, the non-parametric MBAC and its closed-loop control but also an analysis based on simulations.
{"title":"On Autonomic QoS Provisioning for Voice over IP Services","authors":"T. Bohnert, E. Monteiro","doi":"10.1109/CCNC.2007.120","DOIUrl":"https://doi.org/10.1109/CCNC.2007.120","url":null,"abstract":"In this paper we present a framework for autonomic QoS provisioning for VoIP services. The central role is held by a Measurement Based Admission Control algorithm which incorporates three innovations. First, the mathematical underpin- ing obeys a non-parametric approach, removing the dependency on a priori assumed characteristics of the underlying stochastic process, i.e. those of the work arrival process. Thus, we tackle a major issue of common parametric MBAC. The second and the third enhancement is embodied in the combination of a closed-loop control based on perceived QoS. Typically, MBAC algorithms do not validate there decision and thats why many algorithms miss QoS targets due to non- stationaries in work arrival processes. As a metric for perfor- mance evaluation we devised a new approach based on the Emodel, an ITU-T standard for quantifying QoS assessment based on human perception. The contribution is the mathematical framework for both, the non-parametric MBAC and its closed-loop control but also an analysis based on simulations.","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116982130","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 spite of lower resource utilization and bandwidth conservation, multicasting is not deployed widely. For commercial use, the Authentication, Authorization and Accounting (AAA) functionalities must be accommodated by extending the classical unsecured model of IP multicast. For this extension, there is a need for a flexible, scalable and easily adaptable policy framework for multicast access control. In this paper, a policy framework for multicast group access control has been proposed, which fully complies with the Multicast Security Framework and follows the IETF Policy Framework as well. For policy specification, the eXtensible Access Control Markup Language (XACML) and for carrying policy information, the Security As- sertion Markup Language (SAML) have been used. An example access control policy has been developed using XACML for an on-line course, which will be multicast to the registered students.
{"title":"A Policy Framework for Multicast Group Control","authors":"S. Islam, J. Atwood","doi":"10.1109/CCNC.2007.222","DOIUrl":"https://doi.org/10.1109/CCNC.2007.222","url":null,"abstract":"In spite of lower resource utilization and bandwidth conservation, multicasting is not deployed widely. For commercial use, the Authentication, Authorization and Accounting (AAA) functionalities must be accommodated by extending the classical unsecured model of IP multicast. For this extension, there is a need for a flexible, scalable and easily adaptable policy framework for multicast access control. In this paper, a policy framework for multicast group access control has been proposed, which fully complies with the Multicast Security Framework and follows the IETF Policy Framework as well. For policy specification, the eXtensible Access Control Markup Language (XACML) and for carrying policy information, the Security As- sertion Markup Language (SAML) have been used. An example access control policy has been developed using XACML for an on-line course, which will be multicast to the registered students.","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116991798","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}
R. P. Koster, J. Montaner, N. Koraichi, Sorin M. Iacob
We present the introduction of the Domain Issuer in the Open Mobile Alliance digital rights management (OMA DRM) standard. Domains enable users to access content on multiple devices. In OMA DRM 2.0 Rights Issuers manage which devices belong to a domain besides issuing licenses. However, this results in a confusing customer experience when users buy content from different providers and must maintain a domain at each of them. Sharing domains over multiple content providers solves this problem, and this paper presents an architecture that introduces the Domain Issuer to manage this shared domain.
{"title":"Introduction of the Domain Issuer in OMA DRM","authors":"R. P. Koster, J. Montaner, N. Koraichi, Sorin M. Iacob","doi":"10.1109/CCNC.2007.190","DOIUrl":"https://doi.org/10.1109/CCNC.2007.190","url":null,"abstract":"We present the introduction of the Domain Issuer in the Open Mobile Alliance digital rights management (OMA DRM) standard. Domains enable users to access content on multiple devices. In OMA DRM 2.0 Rights Issuers manage which devices belong to a domain besides issuing licenses. However, this results in a confusing customer experience when users buy content from different providers and must maintain a domain at each of them. Sharing domains over multiple content providers solves this problem, and this paper presents an architecture that introduces the Domain Issuer to manage this shared domain.","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125904701","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}
Gholam H. Khaksari, A. Wijesinha, R. Karne, Long He, Sandeep Girumala
PC computing is a novel approach to computing in which there is no operating system, and applications are provided with direct interfaces to the hardware. Bare PC systems are of particular interest for secure, reliable, and efficient peer-to-peer communication between users in view of their inherent simplicity. In this paper, we first provide a brief overview of bare PC computing and note their advantages for peer-to-peer communication. We then describe a peer-to-peer bare PC VoIP application, and present call quality measurements including packet loss, delay, jitter, and MOS (Mean Opinion Score) from several experiments conducted in our laboratory. The results indicate that call quality achieved with bare PC VoIP systems is better than that of operating system based softphones. They also show that a bare PC is able to sustain larger voice packet sizes with no observable degradation in call quality. I. INTRODUCTION An operating system manages resources and interfaces between the users and the hardware. However, critics claim that today's operating systems are often plagued by buggy code and device drivers making them insecure and unreliable [15]. New generations of operating systems promise to provide enhanced security.
{"title":"A Peer-to-Peer Bare PC VoIP Application","authors":"Gholam H. Khaksari, A. Wijesinha, R. Karne, Long He, Sandeep Girumala","doi":"10.1109/CCNC.2007.163","DOIUrl":"https://doi.org/10.1109/CCNC.2007.163","url":null,"abstract":"PC computing is a novel approach to computing in which there is no operating system, and applications are provided with direct interfaces to the hardware. Bare PC systems are of particular interest for secure, reliable, and efficient peer-to-peer communication between users in view of their inherent simplicity. In this paper, we first provide a brief overview of bare PC computing and note their advantages for peer-to-peer communication. We then describe a peer-to-peer bare PC VoIP application, and present call quality measurements including packet loss, delay, jitter, and MOS (Mean Opinion Score) from several experiments conducted in our laboratory. The results indicate that call quality achieved with bare PC VoIP systems is better than that of operating system based softphones. They also show that a bare PC is able to sustain larger voice packet sizes with no observable degradation in call quality. I. INTRODUCTION An operating system manages resources and interfaces between the users and the hardware. However, critics claim that today's operating systems are often plagued by buggy code and device drivers making them insecure and unreliable [15]. New generations of operating systems promise to provide enhanced security.","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126050656","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}
Xiaorong Li, W. Jie, Xiuju FU, H. Chan, Quoc-Thuan Ho, T. Hung, D. Ong, S. Turner, B. Veeravalli
Media streaming is a promising technology which enables fast and adaptive delivery of media contents and allows clients to view videos online without waiting for the entire multimedia files to be completely downloaded. In this paper, we address the issue of streaming quality measurement and assessment over a large scale network. We propose a multiagent system for streaming quality monitoring and analysis (MASQMA) which can real-time monitor and analyze the quality of media streaming over a large scale IP network. Based on a decentralized infrastructure, such a system is scalable and flexible to meet versatile streaming applications without increasing the processing burden on the current media streaming systems. It allows users to real-time monitor the QoS with a variety of quality metrics. We conduct experiments and study the performance under various situations (e.g., bandwidth fluctuations, packet loss, and frame jitter) which are frequently encountered in Wide Area Networks. The results show the multi-agent architecture is practical and flexible to monitor and analyze streaming quality in real time.
{"title":"A Multi-Agent Method for Streaming Quality Monitoring and Analysis over Media Grid","authors":"Xiaorong Li, W. Jie, Xiuju FU, H. Chan, Quoc-Thuan Ho, T. Hung, D. Ong, S. Turner, B. Veeravalli","doi":"10.1109/CCNC.2007.71","DOIUrl":"https://doi.org/10.1109/CCNC.2007.71","url":null,"abstract":"Media streaming is a promising technology which enables fast and adaptive delivery of media contents and allows clients to view videos online without waiting for the entire multimedia files to be completely downloaded. In this paper, we address the issue of streaming quality measurement and assessment over a large scale network. We propose a multiagent system for streaming quality monitoring and analysis (MASQMA) which can real-time monitor and analyze the quality of media streaming over a large scale IP network. Based on a decentralized infrastructure, such a system is scalable and flexible to meet versatile streaming applications without increasing the processing burden on the current media streaming systems. It allows users to real-time monitor the QoS with a variety of quality metrics. We conduct experiments and study the performance under various situations (e.g., bandwidth fluctuations, packet loss, and frame jitter) which are frequently encountered in Wide Area Networks. The results show the multi-agent architecture is practical and flexible to monitor and analyze streaming quality in real time.","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125271223","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}
F. Belqasmi, R. Glitho, R. Dssouli, F. Khendek, John Mattam
Ambient networks refer to a new networking concept for beyond 3G. They use automatic network composition to enable dynamic and instantaneous inter- working between heterogeneous networks on demand. Ambient networks can host several registries (e.g. management information bases, context information bases). When they autonomously compose, the hosted registries have to follow suit and compose. This paper focuses on the issues related to the autonomous composition of registries when ambient networks compose. We identify a set of requirements and propose a general architecture for autonomic composition. We also discuss cursorily information discovery after composition.
{"title":"An Architecture for Composing Registries when Ambient Networks Compose","authors":"F. Belqasmi, R. Glitho, R. Dssouli, F. Khendek, John Mattam","doi":"10.1109/CCNC.2007.105","DOIUrl":"https://doi.org/10.1109/CCNC.2007.105","url":null,"abstract":"Ambient networks refer to a new networking concept for beyond 3G. They use automatic network composition to enable dynamic and instantaneous inter- working between heterogeneous networks on demand. Ambient networks can host several registries (e.g. management information bases, context information bases). When they autonomously compose, the hosted registries have to follow suit and compose. This paper focuses on the issues related to the autonomous composition of registries when ambient networks compose. We identify a set of requirements and propose a general architecture for autonomic composition. We also discuss cursorily information discovery after composition.","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125523734","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}
This paper proposes a novel MAC protocol for sensor networks which is energy efficient and has a good performance as well. Energy is the most important resource in battery-operated sensor networks. Sensor nodes need the wireless network interface to forward data and it has to be always awake to handle possible traffics. This occupies most energy wastes in sensor nodes and pervious works solved this problem by periodic listen and sleep. However, periodic listen and sleep causes the loss of performance. Our protocol also uses periodic sleeping but listen period are used for multi-hop schedule reservations and data transmission is delayed until schedule time. Schedules are reserved as data are pipelined for energy efficiency and performance. In addition, we suggest an energy efficient error recovery mechanism for data transmissions. We evaluate our protocol and compare with previous MAC protocols through ns-2 simulations.
{"title":"An Energy-Efficient Scheduling MAC Protocol for Wireless Sensor Networks","authors":"Jaesub Kim, Keuntae Park, D. Park","doi":"10.1109/CCNC.2007.134","DOIUrl":"https://doi.org/10.1109/CCNC.2007.134","url":null,"abstract":"This paper proposes a novel MAC protocol for sensor networks which is energy efficient and has a good performance as well. Energy is the most important resource in battery-operated sensor networks. Sensor nodes need the wireless network interface to forward data and it has to be always awake to handle possible traffics. This occupies most energy wastes in sensor nodes and pervious works solved this problem by periodic listen and sleep. However, periodic listen and sleep causes the loss of performance. Our protocol also uses periodic sleeping but listen period are used for multi-hop schedule reservations and data transmission is delayed until schedule time. Schedules are reserved as data are pipelined for energy efficiency and performance. In addition, we suggest an energy efficient error recovery mechanism for data transmissions. We evaluate our protocol and compare with previous MAC protocols through ns-2 simulations.","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115340807","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}
Mobile Ad hoc networking is evolving to form the basis for future military and disaster relief network architecture. In such high dynamic networks, such Mobile Ad hoc NETworks (MANETs) are formed over wireless links that are susceptible to failure. Strict requirements on managing security and reliability combined with the dynamic nature of the network provide a strong motivation for proactive self- organizing, self configuring, and self healing management capabilities in the network. This paper describes a Proactive Management Algorithm (PMA) for MANETs. PMA is based on the effective integration of autonomous, predictive and adaptive distributed management strategies to provide proactive fault tolerance management algorithm. Proactive management is achieved through the distributed analysis of the current performance of the mobile nodes utilizing an optimistic discrete event simulation method, which is used to predict the mobile nodes future status and to execute a proactive fault tolerant management scheme. PMA take advantage of distributed parallel processing, flexibility and intelligence of active packets to minimize the management overhead, while adapting to the highly dynamic and resource-constrained nature of MANETs. The simulation results demonstrate that PMA not only significantly reduce management control overhead, but also substantially improves both the performance and the stability of the MANETs
{"title":"A Proactive Fault Tolerance Management Algorithm for Mobile Ad Hoc Networks","authors":"A. Iskander, A. Younis","doi":"10.1109/CCNC.2007.118","DOIUrl":"https://doi.org/10.1109/CCNC.2007.118","url":null,"abstract":"Mobile Ad hoc networking is evolving to form the basis for future military and disaster relief network architecture. In such high dynamic networks, such Mobile Ad hoc NETworks (MANETs) are formed over wireless links that are susceptible to failure. Strict requirements on managing security and reliability combined with the dynamic nature of the network provide a strong motivation for proactive self- organizing, self configuring, and self healing management capabilities in the network. This paper describes a Proactive Management Algorithm (PMA) for MANETs. PMA is based on the effective integration of autonomous, predictive and adaptive distributed management strategies to provide proactive fault tolerance management algorithm. Proactive management is achieved through the distributed analysis of the current performance of the mobile nodes utilizing an optimistic discrete event simulation method, which is used to predict the mobile nodes future status and to execute a proactive fault tolerant management scheme. PMA take advantage of distributed parallel processing, flexibility and intelligence of active packets to minimize the management overhead, while adapting to the highly dynamic and resource-constrained nature of MANETs. The simulation results demonstrate that PMA not only significantly reduce management control overhead, but also substantially improves both the performance and the stability of the MANETs","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122183428","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}
—Multicasting can provide an efficient way of delivering data from a sender to a group of receivers. It has received much attention over the past decade because of an increasing demand for group communication applications such as multimedia streaming. However, native IP multicast has not become widespread largely due to its technical and operational issues. To overcome these obstacles of deployment, various application layer and overlay multicast approaches have been proposed. Compared with IP multicast, they provide a new way of handling multicast without upgrading the infrastructure in a large scale. Nevertheless, they introduce a number of challenges and are still plagued with concerns on scalability, heterogeneity and dynamic performance. In this paper we propose a new protocol framework for addressing these issues, so-called the Dynamic Mesh-based Overlay Multicast Protocol or DMMP, which intends to provide an efficient and resilient multicast support by dynamically managing an overlay core comprised of end hosts. Moreover, DMMP can be used for media streaming which is contracted by a limited resource in stream supplying entities and requires good scalability and reliability. Initial analysis shows that DMMP has the potential to efficiently deliver multicast services for large groups.
{"title":"DMMP: A New Dynamic Mesh-based Overlay Multicast Protocol Framework","authors":"Xiaoming Fu, D. Hogrefe, Jun Lei","doi":"10.1109/CCNC.2007.202","DOIUrl":"https://doi.org/10.1109/CCNC.2007.202","url":null,"abstract":"—Multicasting can provide an efficient way of delivering data from a sender to a group of receivers. It has received much attention over the past decade because of an increasing demand for group communication applications such as multimedia streaming. However, native IP multicast has not become widespread largely due to its technical and operational issues. To overcome these obstacles of deployment, various application layer and overlay multicast approaches have been proposed. Compared with IP multicast, they provide a new way of handling multicast without upgrading the infrastructure in a large scale. Nevertheless, they introduce a number of challenges and are still plagued with concerns on scalability, heterogeneity and dynamic performance. In this paper we propose a new protocol framework for addressing these issues, so-called the Dynamic Mesh-based Overlay Multicast Protocol or DMMP, which intends to provide an efficient and resilient multicast support by dynamically managing an overlay core comprised of end hosts. Moreover, DMMP can be used for media streaming which is contracted by a limited resource in stream supplying entities and requires good scalability and reliability. Initial analysis shows that DMMP has the potential to efficiently deliver multicast services for large groups.","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128651716","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}
INTRODUCTION The Wall Street Journal referred to these products as “the elephant in your living room.” They’re the latest flat panel televisions, and with prices plummeting these devices are becoming more popular than ever. Unfortunately, once consumers bring them home the drama is just beginning. Installations have been complex. And the special cabling required can cost hundreds of dollars. Until now. With Tzero, manufacturers can greatly simplify installation and totally eliminate high-priced, specialty cables.
{"title":"High Definition, Anywhere: How Ultra Wideband Makes Wireless HDMI Possible","authors":"R. Krishnamoorthy","doi":"10.1109/CCNC.2007.84","DOIUrl":"https://doi.org/10.1109/CCNC.2007.84","url":null,"abstract":"INTRODUCTION The Wall Street Journal referred to these products as “the elephant in your living room.” They’re the latest flat panel televisions, and with prices plummeting these devices are becoming more popular than ever. Unfortunately, once consumers bring them home the drama is just beginning. Installations have been complex. And the special cabling required can cost hundreds of dollars. Until now. With Tzero, manufacturers can greatly simplify installation and totally eliminate high-priced, specialty cables.","PeriodicalId":166361,"journal":{"name":"2007 4th IEEE Consumer Communications and Networking Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129001417","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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