Pub Date : 2004-04-19DOI: 10.1109/CCNC.2004.1286960
A. Amoroso, L. Quirini
We describe the architecture of a middleware system that exploits a novel technology to enhance the traditional pen and paper agenda. We describe the architecture of an application service handler to synchronize its digital agenda with its classical paper counterpart. A user may create, modify, or delete appointments in the paper agenda, and the system reproduces these modifications into the digital agenda. The system is almost transparent to the user. The same methodology has been applied to the address book of the agenda. Our system has as low an impact as possible to the classical users, whilst using state of the art technology. Our system allows the enhancement of the traditional paper agenda, transforming it into a proactive tool instead of a passive one.
{"title":"A paper-digital agenda [hand-written to digital agenda synchronization system]","authors":"A. Amoroso, L. Quirini","doi":"10.1109/CCNC.2004.1286960","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286960","url":null,"abstract":"We describe the architecture of a middleware system that exploits a novel technology to enhance the traditional pen and paper agenda. We describe the architecture of an application service handler to synchronize its digital agenda with its classical paper counterpart. A user may create, modify, or delete appointments in the paper agenda, and the system reproduces these modifications into the digital agenda. The system is almost transparent to the user. The same methodology has been applied to the address book of the agenda. Our system has as low an impact as possible to the classical users, whilst using state of the art technology. Our system allows the enhancement of the traditional paper agenda, transforming it into a proactive tool instead of a passive one.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133769651","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 : 2004-04-19DOI: 10.1109/CCNC.2004.1286935
D. Tkachenko, N. Kornet, A. Kaplan
This poster presentation describes some possible scenarios illustrating the interaction between digital TV receivers and home networks. These scenarios are based on free implementations of open interactive digital TV (iDTV) platforms (DASE and MHP) and home network platforms (OSGi). A brief comparison of some available platform implementations is given in the presentation. Proposed scenarios include administration of a home network from the screen of an iDTV receiver, delivery of software bundles to an OSGi platform via a data broadcast carousel and interaction between iDTV applications and devices in home networks. Possible scenarios are illustrated by corresponding demonstrations of actual prototypes.
{"title":"Convergence of iDTV and home network platforms","authors":"D. Tkachenko, N. Kornet, A. Kaplan","doi":"10.1109/CCNC.2004.1286935","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286935","url":null,"abstract":"This poster presentation describes some possible scenarios illustrating the interaction between digital TV receivers and home networks. These scenarios are based on free implementations of open interactive digital TV (iDTV) platforms (DASE and MHP) and home network platforms (OSGi). A brief comparison of some available platform implementations is given in the presentation. Proposed scenarios include administration of a home network from the screen of an iDTV receiver, delivery of software bundles to an OSGi platform via a data broadcast carousel and interaction between iDTV applications and devices in home networks. Possible scenarios are illustrated by corresponding demonstrations of actual prototypes.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128394307","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 : 2004-04-19DOI: 10.1109/CCNC.2004.1286865
E. Siemens, S. Piger, C. Grimm, M. Fromme
The growing amount of realtime applications in the Internet, like multimedia communication or online games, demands an appropriate assessment of end-to-end network performance. In this paper, we present LTest, a tool for distributed, middleware based network performance measurements. We also describe scenarios that help ISPs and content providers to monitor the service levels that will be perceived by users. Furthermore, a performance analysis and error estimation as well as sample measurements are presented within this paper.
{"title":"LTest - a tool for distributed network performance measurement","authors":"E. Siemens, S. Piger, C. Grimm, M. Fromme","doi":"10.1109/CCNC.2004.1286865","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286865","url":null,"abstract":"The growing amount of realtime applications in the Internet, like multimedia communication or online games, demands an appropriate assessment of end-to-end network performance. In this paper, we present LTest, a tool for distributed, middleware based network performance measurements. We also describe scenarios that help ISPs and content providers to monitor the service levels that will be perceived by users. Furthermore, a performance analysis and error estimation as well as sample measurements are presented within this paper.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133038843","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 : 2004-04-19DOI: 10.1109/CCNC.2004.1286901
L. Rong, I. Burnett
The paper discusses media streaming using dynamic resource adaptation and update as a means of facilitating universal multimedia access (UMA): the concept of accessing multimedia content through a variety of possible schemes (Bormans, J. et al., IEEE Sig. Process. Magazine, 2003). As background, the paper summarizes the most common content negotiation approaches and addresses their facets and problems. MPEG-21, the multimedia framework and its relationship to UMA are then explained. Our primary focus is an end-to-end approach to content adaptation which takes advantage of MPEG-21 to facilitate the UMA concept in a media streaming environment. The concept is validated using a media streaming test-bed which provides for wide adaptation according to broad usage descriptions.
本文讨论了使用动态资源适应和更新作为促进通用多媒体访问(UMA)的手段的媒体流:通过各种可能的方案访问多媒体内容的概念(Bormans, J. et al.， IEEE Sig. Process)。杂志,2003)。本文以内容谈判为背景，总结了最常见的内容谈判方法，并分析了它们的特点和存在的问题。然后解释了多媒体框架MPEG-21及其与UMA的关系。我们主要关注的是一种端到端的内容适应方法，它利用MPEG-21来促进媒体流环境中的UMA概念。该概念使用媒体流测试平台进行了验证，该平台根据广泛的使用描述提供了广泛的适应性。
{"title":"Dynamic multimedia adaptation and updating of media streams with MPEG-21","authors":"L. Rong, I. Burnett","doi":"10.1109/CCNC.2004.1286901","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286901","url":null,"abstract":"The paper discusses media streaming using dynamic resource adaptation and update as a means of facilitating universal multimedia access (UMA): the concept of accessing multimedia content through a variety of possible schemes (Bormans, J. et al., IEEE Sig. Process. Magazine, 2003). As background, the paper summarizes the most common content negotiation approaches and addresses their facets and problems. MPEG-21, the multimedia framework and its relationship to UMA are then explained. Our primary focus is an end-to-end approach to content adaptation which takes advantage of MPEG-21 to facilitate the UMA concept in a media streaming environment. The concept is validated using a media streaming test-bed which provides for wide adaptation according to broad usage descriptions.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134263240","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 : 2004-04-19DOI: 10.1109/CCNC.2004.1286833
K. E. Persson, D. Manivannan, M. Singhal
Bluetooth ad hoc networks are constrained by a master/slave configuration, in which one device takes the role of master and controls the communication with the slave devices. Piconets are small Bluetooth networks containing one master and up to seven active slave devices. In order to build larger topologies, called scatternets, the piconets must be interconnected. Scatternets are formed by allowing certain piconet members to participate in several piconets by periodically switching between them. Due to the fact that there is no scatternet formation procedure in the Bluetooth specification, numerous different approaches have been proposed. We discuss criteria for different types of scatternets and establish general models of scatternet topologies. Then we describe the state-of-the-art for Bluetooth scatternets and compare and contrast the approaches.
{"title":"Bluetooth scatternet formation: criteria, models and classification","authors":"K. E. Persson, D. Manivannan, M. Singhal","doi":"10.1109/CCNC.2004.1286833","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286833","url":null,"abstract":"Bluetooth ad hoc networks are constrained by a master/slave configuration, in which one device takes the role of master and controls the communication with the slave devices. Piconets are small Bluetooth networks containing one master and up to seven active slave devices. In order to build larger topologies, called scatternets, the piconets must be interconnected. Scatternets are formed by allowing certain piconet members to participate in several piconets by periodically switching between them. Due to the fact that there is no scatternet formation procedure in the Bluetooth specification, numerous different approaches have been proposed. We discuss criteria for different types of scatternets and establish general models of scatternet topologies. Then we describe the state-of-the-art for Bluetooth scatternets and compare and contrast the approaches.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116538958","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 : 2004-04-19DOI: 10.1109/CCNC.2004.1286839
Qiangfeng Jiang, D. Manivannan
Sensor networks are emerging as a new tool for habitat monitoring in nature reserves, monitoring and gathering events in hazardous environments, surveillance of buildings, and surveillance of enemy activities in a battlefield environment. Nodes in a sensor network are severely constrained by energy, storage capacity and computing power. To prolong the lifetime of the sensor nodes, designing efficient routing protocols is critical. Even though sensor networks are primarily designed for monitoring and reporting events, since they are application dependent, a single routing protocol cannot be efficient for sensor networks across all applications. We first analyze the requirements and similarities of MANETs (mobile ad hoc networks) and sensor networks. Then, we describe the existing routing protocols for sensor networks and present a critical analysis of these protocols. Finally, we compare and contrast these protocols. This comparison reveals the important features that need to be taken into consideration while designing and evaluating new routing protocols for sensor networks.
{"title":"Routing protocols for sensor networks","authors":"Qiangfeng Jiang, D. Manivannan","doi":"10.1109/CCNC.2004.1286839","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286839","url":null,"abstract":"Sensor networks are emerging as a new tool for habitat monitoring in nature reserves, monitoring and gathering events in hazardous environments, surveillance of buildings, and surveillance of enemy activities in a battlefield environment. Nodes in a sensor network are severely constrained by energy, storage capacity and computing power. To prolong the lifetime of the sensor nodes, designing efficient routing protocols is critical. Even though sensor networks are primarily designed for monitoring and reporting events, since they are application dependent, a single routing protocol cannot be efficient for sensor networks across all applications. We first analyze the requirements and similarities of MANETs (mobile ad hoc networks) and sensor networks. Then, we describe the existing routing protocols for sensor networks and present a critical analysis of these protocols. Finally, we compare and contrast these protocols. This comparison reveals the important features that need to be taken into consideration while designing and evaluating new routing protocols for sensor networks.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123439926","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 : 2004-04-19DOI: 10.1109/CCNC.2004.1286874
R. Steffen, R. Knorr
We present a method to enable real-time communication with guaranteed quality of service over shared media in-house networks. This method is a flexible approach for different kinds of applications with varying requirements on data rate and delay, like live multimedia communication, home-control and automation or WWW-services. It is based on an extension of the standard medium access control by a deterministic token-passing protocol that can be applied to different network technologies, like shared media Ethernet, HomePNA or Powerline. We demonstrate how a mathematical pre-runtime analysis of the timing behavior can be performed, so that quality of service and real-time behavior can be guaranteed even in worst case situations.
{"title":"Quality of service MAC protocol for shared media in-house networks","authors":"R. Steffen, R. Knorr","doi":"10.1109/CCNC.2004.1286874","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286874","url":null,"abstract":"We present a method to enable real-time communication with guaranteed quality of service over shared media in-house networks. This method is a flexible approach for different kinds of applications with varying requirements on data rate and delay, like live multimedia communication, home-control and automation or WWW-services. It is based on an extension of the standard medium access control by a deterministic token-passing protocol that can be applied to different network technologies, like shared media Ethernet, HomePNA or Powerline. We demonstrate how a mathematical pre-runtime analysis of the timing behavior can be performed, so that quality of service and real-time behavior can be guaranteed even in worst case situations.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121947122","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 : 2004-04-19DOI: 10.1109/CCNC.2004.1286947
S. Chakrabarti, Liyun Wu, S. Vuong, V. Leung
Home and office networks using Bluetooth or WiFi enabled devices have generated interest in the networking community. Network developers are looking into different means of remotely controlling the devices comprising such networks, so as to have the flexibility to change various device parameters without actually being present near them. We look into an interoperable environment in which various heterogeneous networks are present, comprised of Bluetooth scatternets, 802.11 networks, and other networks like HIPERLAN. We present one such method of remotely controlling devices present in a Bluetooth enabled environment in the home or office from anywhere via the Internet. A Web page applet programmed in Java can be accessed from any Java-enabled browser and is used to control parameters of devices in a remote Bluetooth environment. It is also used to display the current state of the Bluetooth devices. A novel application of using Bluetooth devices for remote control is that a passive electronic device can be given processing power simply by connecting a Bluetooth chip to it. While, currently, Bluetooth simulations have been done, networking with other technologies is going on, so that ultimately devices with various enabling technologies can talk to each other and also switch between technologies according to desired quality of service (QoS) requirements, security, and other factors like power consumption, required bit rate, etc.
{"title":"A remote controlled wireless enabled environment","authors":"S. Chakrabarti, Liyun Wu, S. Vuong, V. Leung","doi":"10.1109/CCNC.2004.1286947","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286947","url":null,"abstract":"Home and office networks using Bluetooth or WiFi enabled devices have generated interest in the networking community. Network developers are looking into different means of remotely controlling the devices comprising such networks, so as to have the flexibility to change various device parameters without actually being present near them. We look into an interoperable environment in which various heterogeneous networks are present, comprised of Bluetooth scatternets, 802.11 networks, and other networks like HIPERLAN. We present one such method of remotely controlling devices present in a Bluetooth enabled environment in the home or office from anywhere via the Internet. A Web page applet programmed in Java can be accessed from any Java-enabled browser and is used to control parameters of devices in a remote Bluetooth environment. It is also used to display the current state of the Bluetooth devices. A novel application of using Bluetooth devices for remote control is that a passive electronic device can be given processing power simply by connecting a Bluetooth chip to it. While, currently, Bluetooth simulations have been done, networking with other technologies is going on, so that ultimately devices with various enabling technologies can talk to each other and also switch between technologies according to desired quality of service (QoS) requirements, security, and other factors like power consumption, required bit rate, etc.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127443671","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 : 2004-04-19DOI: 10.1109/CCNC.2004.1286919
Airton Coelho Vieira Junior, M. L. Anido
Computer network management is a highly demanding task because network managers have to deal with urgent requests to solve network problems. Unfortunately, a network manager may be situated in a location where there is no Internet-connected computer to perform remote network management tasks. To solve this problem, the paper describes the architecture of a novel tool for network management using GSM/GPRS mobile devices. First, the paper presents some general concepts about network management and GPRS technology. Then it focuses on the description of the architecture for the development of applications for network management. The paper also describes implementation details of a network management tool, particularly the interface for mobile devices. Finally, it shows results by depicting the screens of several mobile devices which provide network management information.
{"title":"The architecture of a novel tool for network management using GSM/GPRS mobile devices","authors":"Airton Coelho Vieira Junior, M. L. Anido","doi":"10.1109/CCNC.2004.1286919","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286919","url":null,"abstract":"Computer network management is a highly demanding task because network managers have to deal with urgent requests to solve network problems. Unfortunately, a network manager may be situated in a location where there is no Internet-connected computer to perform remote network management tasks. To solve this problem, the paper describes the architecture of a novel tool for network management using GSM/GPRS mobile devices. First, the paper presents some general concepts about network management and GPRS technology. Then it focuses on the description of the architecture for the development of applications for network management. The paper also describes implementation details of a network management tool, particularly the interface for mobile devices. Finally, it shows results by depicting the screens of several mobile devices which provide network management information.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117175687","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 : 2004-04-19DOI: 10.1109/CCNC.2004.1286924
G. Ohta, Fumitaka Kamada, Nobuyasu Teramura, H. Hojo
For the purpose of creating a mobile multimedia society, the part of broadband communication in next generation mobile communication systems should be supported by wireless LAN technologies. Especially for public service applications, wireless LAN requires several features, i.e., to have as high mobility as cellular systems have and a high data rate which cannot be obtained with cellular systems. The authors confirmed those capabilities using the 5 GHz/25 GHz OFDM wireless LAN systems HiSWANa/ARIB STD-T70 and HiSWANb/ARIB STD-T83. As for a high-speed mobile system, Japan Railway's express train "Shikoku Ishizuchi" was chosen and transmission at 95 km/hour up to a distance of 800 meters was achieved. As for the high data uplink requirement, the emergency medical system was recommended and a 10 Mbps wireless uplink was achieved when transmitting cardiograph information and video signals from, respectively, the ultrasonic diagnostic equipment and video cameras viewing the patient and the scene of the accident.
{"title":"5 GHz W-LAN verification for public mobile applications - Internet newspaper on train and advanced ambulance car","authors":"G. Ohta, Fumitaka Kamada, Nobuyasu Teramura, H. Hojo","doi":"10.1109/CCNC.2004.1286924","DOIUrl":"https://doi.org/10.1109/CCNC.2004.1286924","url":null,"abstract":"For the purpose of creating a mobile multimedia society, the part of broadband communication in next generation mobile communication systems should be supported by wireless LAN technologies. Especially for public service applications, wireless LAN requires several features, i.e., to have as high mobility as cellular systems have and a high data rate which cannot be obtained with cellular systems. The authors confirmed those capabilities using the 5 GHz/25 GHz OFDM wireless LAN systems HiSWANa/ARIB STD-T70 and HiSWANb/ARIB STD-T83. As for a high-speed mobile system, Japan Railway's express train \"Shikoku Ishizuchi\" was chosen and transmission at 95 km/hour up to a distance of 800 meters was achieved. As for the high data uplink requirement, the emergency medical system was recommended and a 10 Mbps wireless uplink was achieved when transmitting cardiograph information and video signals from, respectively, the ultrasonic diagnostic equipment and video cameras viewing the patient and the scene of the accident.","PeriodicalId":316094,"journal":{"name":"First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004.","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121656602","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：