Pub Date : 2009-06-01DOI: 10.1109/INM.2009.5188880
Alexander Keller, S. Subramanian
We describe best practices for deploying a Configuration Management Database (CMDB) that we have developed during several recent client engagements. Given the complexity and novelty of CMDB solutions that deal with discovering, storing and tracking actual Configuration Items (CIs), many enterprises rely on service delivery organizations - such as IBM Global Technology Services - to perform the configuration and roll-out of the system into production. This can be either done on the customer premises (within the scope of a so-called project-based service engagement), or by subscribing to a managed service, and thus leveraging the IT service management environment that the service provider has already set up.
我们描述了部署配置管理数据库(CMDB)的最佳实践，CMDB是我们在最近的几个客户项目中开发的。考虑到CMDB解决方案处理发现、存储和跟踪实际配置项(ci)的复杂性和新颖性，许多企业依赖于服务交付组织(如IBM Global Technology Services)来执行配置并将系统推出到生产中。这既可以在客户现场完成(在所谓的基于项目的服务约定的范围内)，也可以通过订阅托管服务来完成，从而利用服务提供者已经设置的IT服务管理环境。
{"title":"Best practices for deploying a CMDB in large-scale environments","authors":"Alexander Keller, S. Subramanian","doi":"10.1109/INM.2009.5188880","DOIUrl":"https://doi.org/10.1109/INM.2009.5188880","url":null,"abstract":"We describe best practices for deploying a Configuration Management Database (CMDB) that we have developed during several recent client engagements. Given the complexity and novelty of CMDB solutions that deal with discovering, storing and tracking actual Configuration Items (CIs), many enterprises rely on service delivery organizations - such as IBM Global Technology Services - to perform the configuration and roll-out of the system into production. This can be either done on the customer premises (within the scope of a so-called project-based service engagement), or by subscribing to a managed service, and thus leveraging the IT service management environment that the service provider has already set up.","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"24 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126118927","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 : 2009-06-01DOI: 10.1109/INM.2009.5188823
A. Bagchi, F. Caruso, A. Mayer, R. Roman, Prabha Kumar, S. Kowtha
An ongoing trend within the telecommunications industry has been toward providing end-to-end (E2E) IP based services. Accordingly, the associated management perspective has shifted from management of services within a single service provider domain towards a multi-domain paradigm supporting an E2E service view in which relationships among service providers, suppliers and customers and the related service level agreements (SLAs) take on major significance. In order to achieve multi-domain management, it is essential that a service management framework be put in place that supports planning, fulfilling, and assuring E2E services, including management of Service Requests, Service Assurance, and SLAs. The collecting and fusing of information from multiple sources, many external to the service provider's domain, to support the required E2E perspective has become an essential process.
{"title":"Framework to achieve multi-domain service management","authors":"A. Bagchi, F. Caruso, A. Mayer, R. Roman, Prabha Kumar, S. Kowtha","doi":"10.1109/INM.2009.5188823","DOIUrl":"https://doi.org/10.1109/INM.2009.5188823","url":null,"abstract":"An ongoing trend within the telecommunications industry has been toward providing end-to-end (E2E) IP based services. Accordingly, the associated management perspective has shifted from management of services within a single service provider domain towards a multi-domain paradigm supporting an E2E service view in which relationships among service providers, suppliers and customers and the related service level agreements (SLAs) take on major significance. In order to achieve multi-domain management, it is essential that a service management framework be put in place that supports planning, fulfilling, and assuring E2E services, including management of Service Requests, Service Assurance, and SLAs. The collecting and fusing of information from multiple sources, many external to the service provider's domain, to support the required E2E perspective has become an essential process.","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133119119","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 : 2009-06-01DOI: 10.1109/INM.2009.5188877
H. Sanneck, L. Schmelz, E. Troch, L. D. Bie
In access networks, the roll-out of new network elements (NE) or changes to the NE HW and SW cause considerable overhead. The total number of NE is significant and is increasing for new radio access technologies like Long Term Evolution (LTE) due to the decreasing cell size. Furthermore for network scenarios like femto access points / home NEs conventional network deployment and management approaches where the network is fully planned and NEs are tightly managed cannot be followed any more. Furthermore the increased security requirements by operators for such network deployments have to be observed. An auto-connectivity scheme which incorporates the NE's security setup is proposed which tries to balance the trade-off between automation (avoiding any manual intervention) and security. This is achieved by shifting manufacturer and operator activities to a preparation (rather than the actual roll-out) phase and eliminating any interaction between them as much as possible. The NE is delivered only with an “off-theshelf” software & configuration installation. Only at the point in time when the NE is placed on site, the NE hardware-to-site mapping happening is executed. Together with mutual authentication between NE and the Operation, Administration and Maintenance (OAM) system it is possible to enable a very flexible and secure roll-out process.
{"title":"Auto-connectivity and security setup for access network elements","authors":"H. Sanneck, L. Schmelz, E. Troch, L. D. Bie","doi":"10.1109/INM.2009.5188877","DOIUrl":"https://doi.org/10.1109/INM.2009.5188877","url":null,"abstract":"In access networks, the roll-out of new network elements (NE) or changes to the NE HW and SW cause considerable overhead. The total number of NE is significant and is increasing for new radio access technologies like Long Term Evolution (LTE) due to the decreasing cell size. Furthermore for network scenarios like femto access points / home NEs conventional network deployment and management approaches where the network is fully planned and NEs are tightly managed cannot be followed any more. Furthermore the increased security requirements by operators for such network deployments have to be observed. An auto-connectivity scheme which incorporates the NE's security setup is proposed which tries to balance the trade-off between automation (avoiding any manual intervention) and security. This is achieved by shifting manufacturer and operator activities to a preparation (rather than the actual roll-out) phase and eliminating any interaction between them as much as possible. The NE is delivered only with an “off-theshelf” software & configuration installation. Only at the point in time when the NE is placed on site, the NE hardware-to-site mapping happening is executed. Together with mutual authentication between NE and the Operation, Administration and Maintenance (OAM) system it is possible to enable a very flexible and secure roll-out process.","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131443858","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 : 2009-06-01DOI: 10.1109/INM.2009.5188876
Rick Hofstede, T. Fioreze
Network monitoring allows network managers to get a better insight in the network traffic transiting in a managed network. In order to make the tasks of a network manager easier, many network monitoring tools are made available for a wide range of purposes (e.g., traffic accounting, performance analysis, and so on) network managers may have. However, most of these tools lack to provide geographical information about network traffic. This paper presents a network monitoring tool prototype, called SURFmap, which provides network traffic information at a geographical dimension by using the Google Maps API. Through the use of the Google Maps API's features, SURFmap provides different zoom levels when showing network information, which results in the creation of different levels of abstraction in the network data visualization. SURFmap has revealed to be more intuitive when showing network traffic information, which makes the network monitoring activity from the network manager's perspective more interesting.
{"title":"SURFmap: A network monitoring tool based on the Google Maps API","authors":"Rick Hofstede, T. Fioreze","doi":"10.1109/INM.2009.5188876","DOIUrl":"https://doi.org/10.1109/INM.2009.5188876","url":null,"abstract":"Network monitoring allows network managers to get a better insight in the network traffic transiting in a managed network. In order to make the tasks of a network manager easier, many network monitoring tools are made available for a wide range of purposes (e.g., traffic accounting, performance analysis, and so on) network managers may have. However, most of these tools lack to provide geographical information about network traffic. This paper presents a network monitoring tool prototype, called SURFmap, which provides network traffic information at a geographical dimension by using the Google Maps API. Through the use of the Google Maps API's features, SURFmap provides different zoom levels when showing network information, which results in the creation of different levels of abstraction in the network data visualization. SURFmap has revealed to be more intuitive when showing network traffic information, which makes the network monitoring activity from the network manager's perspective more interesting.","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128794588","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 : 2009-06-01DOI: 10.1109/INM.2009.5188842
M. Cristea, R. Strijkers, D. Marchal, L. Gommans, C. D. Laat, R. Meijer
This paper presents the generalised Token Based Networking (gTBN) architecture, which enables dynamic binding of communities and their applications to specialised network services. gTBN uses protocol independent tokens to provide decoupling of authorisation from time of usage as well as identification of network traffic. The tokenised traffic allows specialised software components uploaded into network elements to execute services specific to communities. A reference implementation of gTBN over IPv4 is proposed as well as the presentation of our experiments. These experiments include validation tests of our test bed with common grid applications such as GridFTP, OpenMPI, and VLC. In addition, we present a firewalling use case based on gTBN.
{"title":"Supporting communities in programmable grid networks: gTBN","authors":"M. Cristea, R. Strijkers, D. Marchal, L. Gommans, C. D. Laat, R. Meijer","doi":"10.1109/INM.2009.5188842","DOIUrl":"https://doi.org/10.1109/INM.2009.5188842","url":null,"abstract":"This paper presents the generalised Token Based Networking (gTBN) architecture, which enables dynamic binding of communities and their applications to specialised network services. gTBN uses protocol independent tokens to provide decoupling of authorisation from time of usage as well as identification of network traffic. The tokenised traffic allows specialised software components uploaded into network elements to execute services specific to communities. A reference implementation of gTBN over IPv4 is proposed as well as the presentation of our experiments. These experiments include validation tests of our test bed with common grid applications such as GridFTP, OpenMPI, and VLC. In addition, we present a firewalling use case based on gTBN.","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133492533","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 : 2009-06-01DOI: 10.1109/INM.2009.5188829
Y. Abdelmalek, A. A. E. Al, T. Saadawi
In this paper, we address the problem of collaborative video caching in ad hoc mobile networks. We consider network portraying static video server with wired interface to gateway node that is equipped with wireless interfaces, other nodes are requiring access to the video streams that is stored at video server. In order to reduce the average access latency as well as enhance the video accessibility, efficient video caching placement and replacement strategies are crucial at some of the distributed intermediate nodes across the network. Virtual backbone caching nodes will be elected by executing caching placement algorithm after running the routing protocol phase. The simulation results indicate that the proposed collaborative aggregate cache mechanism can significantly improve the video QoS in terms of packet loss and average packet delay.
{"title":"Collaborative content caching algorithms in mobile ad hoc networks environment","authors":"Y. Abdelmalek, A. A. E. Al, T. Saadawi","doi":"10.1109/INM.2009.5188829","DOIUrl":"https://doi.org/10.1109/INM.2009.5188829","url":null,"abstract":"In this paper, we address the problem of collaborative video caching in ad hoc mobile networks. We consider network portraying static video server with wired interface to gateway node that is equipped with wireless interfaces, other nodes are requiring access to the video streams that is stored at video server. In order to reduce the average access latency as well as enhance the video accessibility, efficient video caching placement and replacement strategies are crucial at some of the distributed intermediate nodes across the network. Virtual backbone caching nodes will be elected by executing caching placement algorithm after running the routing protocol phase. The simulation results indicate that the proposed collaborative aggregate cache mechanism can significantly improve the video QoS in terms of packet loss and average packet delay.","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125106381","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 : 2009-06-01DOI: 10.1109/INM.2009.5188812
Byungchul Park, Y. Won, Hwanjo Yu, J. W. Hong, Hong-Sun Noh, Jang Jin Lee
Industrial process control IP networks support communications between process control applications and devices. Communication faults in any stage of these control networks can cause delays or even shutdown of the entire manufacturing process. The current process of detecting and diagnosing communication faults is mostly manual, cumbersome, and inefficient. Detecting early symptoms of potential problems is very important but automated solutions do not yet exist. Our research goal is to automate the process of detecting and diagnosing the communication faults as well as to prevent problems by detecting early symptoms of potential problems. To achieve our goal, we have first investigated real-world fault cases and summarized control network failures. We have also defined network metrics and their alarm conditions to detect early symptoms for communication failures between process control servers and devices. In particular, we leverage data mining techniques to train the system to learn the rules of network faults in control networks and our testing results show that these rules are very effective. In our earlier work, we presented a design of a process control network monitoring and fault diagnosis system. In this paper, we focus on how the fault detection part of this system can be improved using data mining techniques.
{"title":"Fault detection in IP-based process control networks using data mining","authors":"Byungchul Park, Y. Won, Hwanjo Yu, J. W. Hong, Hong-Sun Noh, Jang Jin Lee","doi":"10.1109/INM.2009.5188812","DOIUrl":"https://doi.org/10.1109/INM.2009.5188812","url":null,"abstract":"Industrial process control IP networks support communications between process control applications and devices. Communication faults in any stage of these control networks can cause delays or even shutdown of the entire manufacturing process. The current process of detecting and diagnosing communication faults is mostly manual, cumbersome, and inefficient. Detecting early symptoms of potential problems is very important but automated solutions do not yet exist. Our research goal is to automate the process of detecting and diagnosing the communication faults as well as to prevent problems by detecting early symptoms of potential problems. To achieve our goal, we have first investigated real-world fault cases and summarized control network failures. We have also defined network metrics and their alarm conditions to detect early symptoms for communication failures between process control servers and devices. In particular, we leverage data mining techniques to train the system to learn the rules of network faults in control networks and our testing results show that these rules are very effective. In our earlier work, we presented a design of a process control network monitoring and fault diagnosis system. In this paper, we focus on how the fault detection part of this system can be improved using data mining techniques.","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134102358","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 : 2009-06-01DOI: 10.1109/INM.2009.5188800
V. Gondi, N. Agoulmine
The roaming between different WiMAX (Worldwide Interoperability for Microwave Access) networks as well as the interworking between WiMAX and other access technologies will be a key enabler for global WiMAX deployment. To provide secure and seamless roaming capability for mobile users across different access network domains, belonging to the same or different operators, we propose a roaming & interworking solution using intermediary entities, called Roaming Interworking Intermediary (RII). A generic RII-based interworking and roaming architecture between WiMAX, 3GPP (third Generation Partnership Project) and WLAN networks is presented. A test-bed has been setup, using real pre-WiMAX and Wi-Fi equipments and real operational cellular network, to demonstrate and evaluate the proposed solutions. The robustness, feasibility and efficiency of the proposed architecture are proven through different user scenarios.
{"title":"Secure interworking & roaming of WiMAX with 3G and Wi-Fi","authors":"V. Gondi, N. Agoulmine","doi":"10.1109/INM.2009.5188800","DOIUrl":"https://doi.org/10.1109/INM.2009.5188800","url":null,"abstract":"The roaming between different WiMAX (Worldwide Interoperability for Microwave Access) networks as well as the interworking between WiMAX and other access technologies will be a key enabler for global WiMAX deployment. To provide secure and seamless roaming capability for mobile users across different access network domains, belonging to the same or different operators, we propose a roaming & interworking solution using intermediary entities, called Roaming Interworking Intermediary (RII). A generic RII-based interworking and roaming architecture between WiMAX, 3GPP (third Generation Partnership Project) and WLAN networks is presented. A test-bed has been setup, using real pre-WiMAX and Wi-Fi equipments and real operational cellular network, to demonstrate and evaluate the proposed solutions. The robustness, feasibility and efficiency of the proposed architecture are proven through different user scenarios.","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134117575","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 : 2009-06-01DOI: 10.1109/INM.2009.5188863
Patricia Marcu, G. Grabarnik, Laura Z. Luan, D. Rosu, L. Shwartz, Christopher Ward
In recent years, IT Service Management (ITSM) has become one of the most researched areas of IT. Incident and Problem Management are two of the Service Operation processes in the IT Infrastructure Library (ITIL). These two processes aim to recognize, log, isolate and correct errors which occur in the environment and disrupt the delivery of services. Incident Management and Problem Management form the basis of the tooling provided by an Incident Ticket Systems (ITS).
{"title":"Towards an optimized model of incident ticket correlation","authors":"Patricia Marcu, G. Grabarnik, Laura Z. Luan, D. Rosu, L. Shwartz, Christopher Ward","doi":"10.1109/INM.2009.5188863","DOIUrl":"https://doi.org/10.1109/INM.2009.5188863","url":null,"abstract":"In recent years, IT Service Management (ITSM) has become one of the most researched areas of IT. Incident and Problem Management are two of the Service Operation processes in the IT Infrastructure Library (ITIL). These two processes aim to recognize, log, isolate and correct errors which occur in the environment and disrupt the delivery of services. Incident Management and Problem Management form the basis of the tooling provided by an Incident Ticket Systems (ITS).","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134349315","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 : 2009-06-01DOI: 10.1109/INM.2009.5188809
Estêvão M. Z. Rohr, L. Granville, L. Tarouco
The use of Web services in network management has became a reality after recent researches and industry standardization effort. Although performance is a critical issue, as well as security support, no investigation so far has observed how secure Web services communications perform when employed for network management. In this paper we present a first investigation in this subject by evaluating the performance of WS-Security and XACML in a scenario where remote processes information is retrieved. Our evaluation shows that encryption and access control increase the response time more than other aspects like message signature or authentication. We also observe that messages carrying security information are 10 times larger than unsecure messages, which may prevent the retrieval of a large number of information and short periods of time.
{"title":"Evaluating WS-security and XACML in web services-based network management","authors":"Estêvão M. Z. Rohr, L. Granville, L. Tarouco","doi":"10.1109/INM.2009.5188809","DOIUrl":"https://doi.org/10.1109/INM.2009.5188809","url":null,"abstract":"The use of Web services in network management has became a reality after recent researches and industry standardization effort. Although performance is a critical issue, as well as security support, no investigation so far has observed how secure Web services communications perform when employed for network management. In this paper we present a first investigation in this subject by evaluating the performance of WS-Security and XACML in a scenario where remote processes information is retrieved. Our evaluation shows that encryption and access control increase the response time more than other aspects like message signature or authentication. We also observe that messages carrying security information are 10 times larger than unsecure messages, which may prevent the retrieval of a large number of information and short periods of time.","PeriodicalId":332206,"journal":{"name":"2009 IFIP/IEEE International Symposium on Integrated Network Management","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133031043","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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