Pub Date : 2004-09-01DOI: 10.1109/ISCE.2004.1375968
R. Wijnhoven, E. Jaspers, P. D. De with
In this paper we describe an architecture for a multi-client, multi-channel video streaming server targeted at the security market. To obtain scalability in bit-rate, multiple compressed video streams are available for each video channel. For transmission to the user, one stream has to be selected for each video channel. Parameters and cost functions to derive the optimal set of streams are defined and heuristic algorithms to find the best combination of video streams are introduced.
{"title":"Multi-channel video streaming server for surveillance systems","authors":"R. Wijnhoven, E. Jaspers, P. D. De with","doi":"10.1109/ISCE.2004.1375968","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1375968","url":null,"abstract":"In this paper we describe an architecture for a multi-client, multi-channel video streaming server targeted at the security market. To obtain scalability in bit-rate, multiple compressed video streams are available for each video channel. For transmission to the user, one stream has to be selected for each video channel. Parameters and cost functions to derive the optimal set of streams are defined and heuristic algorithms to find the best combination of video streams are introduced.","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121446456","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 : 2004-09-01DOI: 10.1109/ISCE.2004.1375985
Dong-oh Kang, K. Kang, Jeunwoo Lee
As Ironicnetwork .tecknulog>' /ius been devcloped rapidly, tlrrre are increasing chances to uccess and enjoy nrultinicrlia coi7reiit.s di.stribiired in a home viu lionrenetwork. And, the recent trend of digitul convergence iiiukes PCs und consumer electronic uppliances uorking together. Tlrerefore. the key issue of nraltiniediu systenis in Iioriienehwrk environnient i s interoperabiliy among different kind of nrultiniedia devices. We developed (I nraltimediu s w e n i whiclr ahikv by UPnP AV rrrcliitectirre with an OSGi plu@omi. whirli provides interiiperdility onlong niultimedio honie uppliances. The .system enubles niiiltiniedia service pr0vider.s out.side honie to collect infomiutiori on uppliancrs inside U home. and render un optimized service for the kome. And. by utilizing a lioniegateway. it is po.mible to nuke U software bridge heween UPnP AV devices rind other generic or HAW device.^. etc. I n this paper. we slrow the structure oiid initial resalts of the proposed nrrrlriniedia .sy.~tetir, and discuss .sonic issues forfurtlier r/eve[opmenr'. Index T e r m Homenetwork, multimedia system, OSCi platfnrm, UPnP AV architecture.
随着网络技术的快速发展，网络用户获得成功的机会越来越多，并享受到越来越多的社交网络服务。di。条纹在一个家庭观看狮子网络。而且，最近的数字融合趋势是个人电脑和消费电子设备一起工作。Tlrerefore。网络环境下多媒体系统的关键问题是不同类型多媒体设备之间的互操作性。我们开发了一种基于UPnP的实时介质，该介质使用OSGi plu@omi实现。惠而利提供长时间的多媒体蜂蜜设备。系统支持无媒体服务提供商。年代。收集美国国内供应商的信息。为家庭提供联合国优化服务。和。通过使用狮子网关。它是po。可在UPnP AV设备与其他通用或HAW设备之间建立U软件桥接。等。我在这篇论文中。我们根据所提出的nrrrnidia系统的初步结果对结构进行了减速。~ tetir,并讨论.sonic forfurtlier r /夜[opmenr '的问题。本文主要研究了家庭网络、多媒体系统、OSCi平台、UPnP AV体系结构。
{"title":"UPnP AV architectural multimedia system with an OSGi platform","authors":"Dong-oh Kang, K. Kang, Jeunwoo Lee","doi":"10.1109/ISCE.2004.1375985","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1375985","url":null,"abstract":"As Ironicnetwork .tecknulog>' /ius been devcloped rapidly, tlrrre are increasing chances to uccess and enjoy nrultinicrlia coi7reiit.s di.stribiired in a home viu lionrenetwork. And, the recent trend of digitul convergence iiiukes PCs und consumer electronic uppliances uorking together. Tlrerefore. the key issue of nraltiniediu systenis in Iioriienehwrk environnient i s interoperabiliy among different kind of nrultiniedia devices. We developed (I nraltimediu s w e n i whiclr ahikv by UPnP AV rrrcliitectirre with an OSGi plu@omi. whirli provides interiiperdility onlong niultimedio honie uppliances. The .system enubles niiiltiniedia service pr0vider.s out.side honie to collect infomiutiori on uppliancrs inside U home. and render un optimized service for the kome. And. by utilizing a lioniegateway. it is po.mible to nuke U software bridge heween UPnP AV devices rind other generic or HAW device.^. etc. I n this paper. we slrow the structure oiid initial resalts of the proposed nrrrlriniedia .sy.~tetir, and discuss .sonic issues forfurtlier r/eve[opmenr'. Index T e r m Homenetwork, multimedia system, OSCi platfnrm, UPnP AV architecture.","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132210560","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 : 2004-09-01DOI: 10.1109/ISCE.2004.1375969
K.H. Goh, Yong Huang, L. Hui
This paper describes an auroinafic video confrasf erihancemenf system and algorifhin tlzat selects .suifahle mapping fimrfioiis , fi,r lzrminunce coiifrast mapping based on hisfograni ana1wi.y'. Index Terms Luminance contrast enhancement
{"title":"Automatic video contrast enhancement","authors":"K.H. Goh, Yong Huang, L. Hui","doi":"10.1109/ISCE.2004.1375969","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1375969","url":null,"abstract":"This paper describes an auroinafic video confrasf erihancemenf system and algorifhin tlzat selects .suifahle mapping fimrfioiis , fi,r lzrminunce coiifrast mapping based on hisfograni ana1wi.y'. Index Terms Luminance contrast enhancement","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134136539","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 : 2004-09-01DOI: 10.1109/ISCE.2004.1375906
Milan Pastmak, H. Peter, de With, LogicaCMG Ncdcrland.
The low bit-rate profiles of the MPEG-4 standard enable video-streaming for mobile Consumer Electronics (CE) and computing devices. Prediction of the system behavior is a critical issue for the implementation of such applications on a resource-limited (e.g. mobile) platform. The high complexity of the MPEG-4 standard (e.g. the shape-texture decoding) and the resulting dynamic allocation of resources are conflicting with resource limitations. For implementation, we explore a multiprocessor architecture, because it enables an efficient mapping combined with low power consumption. In this paper, we focus on a detailed analysis of the dynamic behavior and bandwidth, using an earlier proposed linear parametrical computation model (1). The analysis reveals that the actual average bandwidth requirements are about 2.5 times lower than the worst-case estimation. As a consequence of the resulting bandwidth, an additional video stream may be decoded on the average with the same target platform, though control may be needed for worst-case situations 1 .
{"title":"Data storage exploration and bandwidth analysis for distributed MPEG-4 decoding","authors":"Milan Pastmak, H. Peter, de With, LogicaCMG Ncdcrland.","doi":"10.1109/ISCE.2004.1375906","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1375906","url":null,"abstract":"The low bit-rate profiles of the MPEG-4 standard enable video-streaming for mobile Consumer Electronics (CE) and computing devices. Prediction of the system behavior is a critical issue for the implementation of such applications on a resource-limited (e.g. mobile) platform. The high complexity of the MPEG-4 standard (e.g. the shape-texture decoding) and the resulting dynamic allocation of resources are conflicting with resource limitations. For implementation, we explore a multiprocessor architecture, because it enables an efficient mapping combined with low power consumption. In this paper, we focus on a detailed analysis of the dynamic behavior and bandwidth, using an earlier proposed linear parametrical computation model (1). The analysis reveals that the actual average bandwidth requirements are about 2.5 times lower than the worst-case estimation. As a consequence of the resulting bandwidth, an additional video stream may be decoded on the average with the same target platform, though control may be needed for worst-case situations 1 .","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132611146","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 : 2004-09-01DOI: 10.1109/ISCE.2004.1375907
Xiaowei Song, Yu Liu, Qinggang Meng, Jianfu Teng, Guiling Li
AJter comparison and anal,vsis ofthree di@rent traiiscoding architectures, we suggested a more eJj;cient stiwcture/iir MPEG-2 to MPEG-4 FGS tronscoding. We also solved iiicompatible problem caiised Iiy the diffirence.s between the two standards and provided a new method of Selective Eiihot7cement hmed on the MV vahres. In oddition, two Freeyirenp Weigliting matrices are emnploved to utilize the significance d$f&ence.s among the DCT coefficients. Using these tecl7nulugie.~ 01 the MPEG-2 to MPEG-4 FGS transcoding. goodper:jorniance hus been achieved I. Index Terms Transcoding, MPEG-4, FGS
{"title":"A new method of selective enhancement for MPEG-2 to MPEG-4 FGS transcoding","authors":"Xiaowei Song, Yu Liu, Qinggang Meng, Jianfu Teng, Guiling Li","doi":"10.1109/ISCE.2004.1375907","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1375907","url":null,"abstract":"AJter comparison and anal,vsis ofthree di@rent traiiscoding architectures, we suggested a more eJj;cient stiwcture/iir MPEG-2 to MPEG-4 FGS tronscoding. We also solved iiicompatible problem caiised Iiy the diffirence.s between the two standards and provided a new method of Selective Eiihot7cement hmed on the MV vahres. In oddition, two Freeyirenp Weigliting matrices are emnploved to utilize the significance d$f&ence.s among the DCT coefficients. Using these tecl7nulugie.~ 01 the MPEG-2 to MPEG-4 FGS transcoding. goodper:jorniance hus been achieved I. Index Terms Transcoding, MPEG-4, FGS","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130772985","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 : 2004-09-01DOI: 10.1109/ISCE.2004.1376014
M. Divya, T. Phan, N. Vun
The paper descrihes the design and implemenfatiun of a vector graphic based digi~al Map system that can be displayed on plaffivms that .support J2ME (Java 2 Micro Edition). The digifal map ir?formation is encoded in the GDF (Geographic Data File) vector graphic fbrmat utilizins GPS coordinators (1.7 r+rence.s. and is stored in a dutuhase on the Map Server. A portable device (notehook, PDA. ond other mohile devices) conpled with a GPS receiver and wireless LAN con reyue.sf for the map irlformation ut itr immediate vicini@ hv sending i ts GPS coordinates to the Map server. The server then retrieves the relevant section (Jf the map. /ranslates the detail into U XML-hosed Qrmat. and t?ansfer.s the infirmation to the display device that support J?ME standord. The XML data contains not onlv the map information: i t o1,so contains the relevant at/rihrrte.s of the ohjects ,found in the map. Using this .sy.stem. map can be generated on-demand,fram the digital database in real time and streumed to the portahle device.7 as it is moved around. Index Terms GDF, JZME, Vector Graphics, XML.
{"title":"A J2ME based digital map system","authors":"M. Divya, T. Phan, N. Vun","doi":"10.1109/ISCE.2004.1376014","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1376014","url":null,"abstract":"The paper descrihes the design and implemenfatiun of a vector graphic based digi~al Map system that can be displayed on plaffivms that .support J2ME (Java 2 Micro Edition). The digifal map ir?formation is encoded in the GDF (Geographic Data File) vector graphic fbrmat utilizins GPS coordinators (1.7 r+rence.s. and is stored in a dutuhase on the Map Server. A portable device (notehook, PDA. ond other mohile devices) conpled with a GPS receiver and wireless LAN con reyue.sf for the map irlformation ut itr immediate vicini@ hv sending i ts GPS coordinates to the Map server. The server then retrieves the relevant section (Jf the map. /ranslates the detail into U XML-hosed Qrmat. and t?ansfer.s the infirmation to the display device that support J?ME standord. The XML data contains not onlv the map information: i t o1,so contains the relevant at/rihrrte.s of the ohjects ,found in the map. Using this .sy.stem. map can be generated on-demand,fram the digital database in real time and streumed to the portahle device.7 as it is moved around. Index Terms GDF, JZME, Vector Graphics, XML.","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131046193","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 : 2004-09-01DOI: 10.1109/ISCE.2004.1375900
M. Erdmann, T. Kunert, M. Mehnert
In this paper the theov ofs.wtems engineering i.7 applied to broadcast sy.stem.7 design to cope with the increasing cumple.rih. of interconnected sy.vtems. A coze srndv is provided introducing a workjlow oriented approach to systems engineering Jbcasing on the content production process f i v MHP applications. Analysis and modeling of dij?erent workfloivr relevant for the MHP content production Jbrm the hasi,s Jbr MHP syterns engineering.' Index Terms Broadcast systems engineering, interactive television, Multimedia Home Platform, requirements engineering.
{"title":"Systems engineering for MHP applications","authors":"M. Erdmann, T. Kunert, M. Mehnert","doi":"10.1109/ISCE.2004.1375900","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1375900","url":null,"abstract":"In this paper the theov ofs.wtems engineering i.7 applied to broadcast sy.stem.7 design to cope with the increasing cumple.rih. of interconnected sy.vtems. A coze srndv is provided introducing a workjlow oriented approach to systems engineering Jbcasing on the content production process f i v MHP applications. Analysis and modeling of dij?erent workfloivr relevant for the MHP content production Jbrm the hasi,s Jbr MHP syterns engineering.' Index Terms Broadcast systems engineering, interactive television, Multimedia Home Platform, requirements engineering.","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"302 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133448061","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 : 2004-09-01DOI: 10.1109/ISCE.2004.1375949
H. Schwetlick, A. Wolf
Parallel sequence spread spectrrim PSSS pro1ides a physical layer for RF data communication. It is based on an overlap of cyclically shified binary spreading sequences modulated with Mary PAM. QAM and PSK. Coding, modulation and channel equa1ization can be integrated and allow a flexiable tradeoff hetween data rate, energy efficiency and multipath fading resistonce at a low electronic complexity. This paper describes the principles of the transmission procedure including the spreading, overlap and modulation. Some results are shown from AWGN-channels with different modulation procedurers.
{"title":"PSSS - parallel sequence spread spectrum a physical layer for RF communication","authors":"H. Schwetlick, A. Wolf","doi":"10.1109/ISCE.2004.1375949","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1375949","url":null,"abstract":"Parallel sequence spread spectrrim PSSS pro1ides a physical layer for RF data communication. It is based on an overlap of cyclically shified binary spreading sequences modulated with Mary PAM. QAM and PSK. Coding, modulation and channel equa1ization can be integrated and allow a flexiable tradeoff hetween data rate, energy efficiency and multipath fading resistonce at a low electronic complexity. This paper describes the principles of the transmission procedure including the spreading, overlap and modulation. Some results are shown from AWGN-channels with different modulation procedurers.","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124396603","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 : 2004-09-01DOI: 10.1109/ISCE.2004.1375956
M. Zhao, R. Kneepkens, Paul M. Hofman, G. D. Haan
Blocking artifacts may appear in block based digital image and video coding systems like JPEG and MPEG, especially when compression is done at a low bit-rate. The blocking artifacts can degrade the perceived image quality. In this paper, a method for reducing the blocking artifacts in the decoded image using adaptive filters is proposed. The selection of the proper filter is based on the local image pattern and/or the relative pixel position in the coding block. The results show a significant image quality improvement. To evaluate the methods, both Mean Square Error (MSE) scores and Block-edge Impairment Metric (BIM) are given for objective comparison. Screen shots are also shown to demonstrate the subjective quality.
{"title":"Content adaptive image de-blocking","authors":"M. Zhao, R. Kneepkens, Paul M. Hofman, G. D. Haan","doi":"10.1109/ISCE.2004.1375956","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1375956","url":null,"abstract":"Blocking artifacts may appear in block based digital image and video coding systems like JPEG and MPEG, especially when compression is done at a low bit-rate. The blocking artifacts can degrade the perceived image quality. In this paper, a method for reducing the blocking artifacts in the decoded image using adaptive filters is proposed. The selection of the proper filter is based on the local image pattern and/or the relative pixel position in the coding block. The results show a significant image quality improvement. To evaluate the methods, both Mean Square Error (MSE) scores and Block-edge Impairment Metric (BIM) are given for objective comparison. Screen shots are also shown to demonstrate the subjective quality.","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114815227","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 : 2004-09-01DOI: 10.1109/ISCE.2004.1375967
W. Lu, Site Yu, Jinghui Chu
When Personal Video Recorder is tised to record TV programs atitomatically. the tinte rnrlfliction qflen exists. i n this paper. a imified program resntirce management scheme is presenled. Accordiiig to oiir e.vperiments, this scheme can solve the coilflirtion @&ive!v in the new-t)rpe EPG generating and schedrrkd TV program recording applications’.
{"title":"A unified program resource management scheme of personal video recorder","authors":"W. Lu, Site Yu, Jinghui Chu","doi":"10.1109/ISCE.2004.1375967","DOIUrl":"https://doi.org/10.1109/ISCE.2004.1375967","url":null,"abstract":"When Personal Video Recorder is tised to record TV programs atitomatically. the tinte rnrlfliction qflen exists. i n this paper. a imified program resntirce management scheme is presenled. Accordiiig to oiir e.vperiments, this scheme can solve the coilflirtion @&ive!v in the new-t)rpe EPG generating and schedrrkd TV program recording applications’.","PeriodicalId":169376,"journal":{"name":"IEEE International Symposium on Consumer Electronics, 2004","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117029564","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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