Pub Date : 2010-06-07DOI: 10.1109/ISCE.2010.5523241
M. Jacob, Christian Mbianke, T. Kurner
This paper presents a dynamic 60 GHz radio channel model for system level simulations with MAC Protocols. It is based on radio propagation measurements investigating the influence of moving humans on the 60 GHz channel, which has been performed in the framework of IEEE 802.11ad 60 GHz WLAN standardization.
{"title":"A dynamic 60 GHz radio channel model for system level simulations with MAC protocols for IEEE 802.11ad","authors":"M. Jacob, Christian Mbianke, T. Kurner","doi":"10.1109/ISCE.2010.5523241","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523241","url":null,"abstract":"This paper presents a dynamic 60 GHz radio channel model for system level simulations with MAC Protocols. It is based on radio propagation measurements investigating the influence of moving humans on the 60 GHz channel, which has been performed in the framework of IEEE 802.11ad 60 GHz WLAN standardization.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124209502","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523706
Lochan Verma, D. Sim, Scott Seongwook Lee
Recently, many standardization activities are in progress to extend Wi-Fi operation to the available unlicensed TV spectrum, i.e., 54–698 MHz. TV channel scanning for incumbent detection is crucial for operation in the TV band and we propose IEs (Information Element) that assist an AP (Access Point) in delegating channel scanning operation to the associated STAs (STAtion) so that it is always available for remedial action if an incumbent arrives on the channel on which the BSS (Basic Service Set) is operational. Also, TV channels are of 6 MHz width and we propose IEs that assist in channel bonding negotiations between two Wi-Fi devices operating in the TV spectrum. The proposed IEs are transmitted by the Wi-Fi devices using the Action frames defined in the IEEE 802.11 standard.
{"title":"Wireless networking in TV white space leveraging Wi-Fi","authors":"Lochan Verma, D. Sim, Scott Seongwook Lee","doi":"10.1109/ISCE.2010.5523706","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523706","url":null,"abstract":"Recently, many standardization activities are in progress to extend Wi-Fi operation to the available unlicensed TV spectrum, i.e., 54–698 MHz. TV channel scanning for incumbent detection is crucial for operation in the TV band and we propose IEs (Information Element) that assist an AP (Access Point) in delegating channel scanning operation to the associated STAs (STAtion) so that it is always available for remedial action if an incumbent arrives on the channel on which the BSS (Basic Service Set) is operational. Also, TV channels are of 6 MHz width and we propose IEs that assist in channel bonding negotiations between two Wi-Fi devices operating in the TV spectrum. The proposed IEs are transmitted by the Wi-Fi devices using the Action frames defined in the IEEE 802.11 standard.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124424656","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523708
F. Pescador, D. Samper, M. Garrido, E. Juarez, Médéric Blestel
In this paper, a implementation of a DSP-based IP set-top box (IP-STB) to decode CIF sequences compliant with the new Scalable Video Coding standard (14496–10 Amd 3) using Open SVC Decoder (OSD) is presented. The OSD software, designed for the PC environment, has been integrated into a previously developed IP-STB prototype. About 15 CIF frames per second can be decoded with the IP-STB.
{"title":"A DSP based SVC IP STB using open SVC decoder","authors":"F. Pescador, D. Samper, M. Garrido, E. Juarez, Médéric Blestel","doi":"10.1109/ISCE.2010.5523708","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523708","url":null,"abstract":"In this paper, a implementation of a DSP-based IP set-top box (IP-STB) to decode CIF sequences compliant with the new Scalable Video Coding standard (14496–10 Amd 3) using Open SVC Decoder (OSD) is presented. The OSD software, designed for the PC environment, has been integrated into a previously developed IP-STB prototype. About 15 CIF frames per second can be decoded with the IP-STB.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122398011","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5522728
Nikola Kuzmanovic, T. Maruna, M. Savic, G. Miljkovic, D. Isailovic
This paper presents an approach of using Google's Android software stack as an application environment for digital television (DTV) sets and set-top boxes. Expanding Android software stack to support DTV decoder devices and developing universal TV and set-top box applications for Android environment enables rapid software development and shorter release time for next generation products. Paper describes the process of porting complete Android software stack (Android Linux kernel, system drivers, user space libraries, Android specific libraries and programs) to a DTV decoder platform with Linux kernel and available stable device drivers; implementation of extensions to support DTV channel search, memorizing, playback and recording. Performance and features of final system will be presented.
{"title":"Google's android as an application environment for DTV decoder system","authors":"Nikola Kuzmanovic, T. Maruna, M. Savic, G. Miljkovic, D. Isailovic","doi":"10.1109/ISCE.2010.5522728","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5522728","url":null,"abstract":"This paper presents an approach of using Google's Android software stack as an application environment for digital television (DTV) sets and set-top boxes. Expanding Android software stack to support DTV decoder devices and developing universal TV and set-top box applications for Android environment enables rapid software development and shorter release time for next generation products. Paper describes the process of porting complete Android software stack (Android Linux kernel, system drivers, user space libraries, Android specific libraries and programs) to a DTV decoder platform with Linux kernel and available stable device drivers; implementation of extensions to support DTV channel search, memorizing, playback and recording. Performance and features of final system will be presented.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125596196","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5522761
T. P. Van, V. Nguyen
Being composed of car electronics and road-side communication devices, vehicular ad hoc networking (VANET) is the heart of intelligent transportation system. Beside car-to-car communications, the system also communicates to centralized points in infrastructure networks. Given that data load is heavy when the density of cars is high and that they move fast, roadside electronics potentially face congestion. This study designs a novel framework finding the best route with respect to efficiency and fairness among road-side units. The introduced algorithm exploits both position data and load to make routing decisions optimally. Simulation results clearly demonstrate the soundness of our proposals.
{"title":"Location-aware and load-balanced data delivery at road-side units in vehicular Ad hoc networks","authors":"T. P. Van, V. Nguyen","doi":"10.1109/ISCE.2010.5522761","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5522761","url":null,"abstract":"Being composed of car electronics and road-side communication devices, vehicular ad hoc networking (VANET) is the heart of intelligent transportation system. Beside car-to-car communications, the system also communicates to centralized points in infrastructure networks. Given that data load is heavy when the density of cars is high and that they move fast, roadside electronics potentially face congestion. This study designs a novel framework finding the best route with respect to efficiency and fairness among road-side units. The introduced algorithm exploits both position data and load to make routing decisions optimally. Simulation results clearly demonstrate the soundness of our proposals.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124759912","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523712
T. Le, Hang Nguyen, Hongguang Zhang
Scalable Video Coding is the latest extension of the famous Advance Video Coding standard. The main advantage of SVC is that it can provide scalability for visual services which are serving customers with heterogeneous network conditions and terminals' capabilities. Nevertheless, the multimedia service research community and industry have not been able to fully utilize the entire potential of this video coding standard extension. One important reason is because of the lack of an evaluation tool-set and platform widely available for usage in the designing, evaluating as well as deploying processes of SVC-based visual services. EvalSVC aims to fill this gap and fosters SVC-based applications and research in multimedia services. It is capable of evaluating the enhanced features (such as spatial, temporal, SNR, and combined scalability) of SVC bit-streams transmitting over real or simulated networks. This tool-set is publicly available.
{"title":"EvalSVC — An evaluation platform for scalable video coding transmission","authors":"T. Le, Hang Nguyen, Hongguang Zhang","doi":"10.1109/ISCE.2010.5523712","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523712","url":null,"abstract":"Scalable Video Coding is the latest extension of the famous Advance Video Coding standard. The main advantage of SVC is that it can provide scalability for visual services which are serving customers with heterogeneous network conditions and terminals' capabilities. Nevertheless, the multimedia service research community and industry have not been able to fully utilize the entire potential of this video coding standard extension. One important reason is because of the lack of an evaluation tool-set and platform widely available for usage in the designing, evaluating as well as deploying processes of SVC-based visual services. EvalSVC aims to fill this gap and fosters SVC-based applications and research in multimedia services. It is capable of evaluating the enhanced features (such as spatial, temporal, SNR, and combined scalability) of SVC bit-streams transmitting over real or simulated networks. This tool-set is publicly available.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125490844","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523731
V. Aslantaş, Rifat Kurban
Images obtained by an optical camera are seriously affected from the limited depth of the field issue. That is, the objects located in-front-of or behind the focus of the camera are blurred. Everywhere-in-focus images can be obtained by combining focused regions of images which were captured by different focal settings. In this paper, an optimal region based spatial domain image fusion approach based on selecting sharper regions from the multi-focus source images is proposed. Size of the block type regions are optimized by using particle swarm optimization (PSO) algorithm. Quantitative and subjective experimental results of different image sets show that proposed method is better than traditional wavelet and Laplacian pyramid based and also genetic algorithm (GA) based methods.
{"title":"Extending depth-of-field of a digital camera using particle swarm optimization based image fusion","authors":"V. Aslantaş, Rifat Kurban","doi":"10.1109/ISCE.2010.5523731","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523731","url":null,"abstract":"Images obtained by an optical camera are seriously affected from the limited depth of the field issue. That is, the objects located in-front-of or behind the focus of the camera are blurred. Everywhere-in-focus images can be obtained by combining focused regions of images which were captured by different focal settings. In this paper, an optimal region based spatial domain image fusion approach based on selecting sharper regions from the multi-focus source images is proposed. Size of the block type regions are optimized by using particle swarm optimization (PSO) algorithm. Quantitative and subjective experimental results of different image sets show that proposed method is better than traditional wavelet and Laplacian pyramid based and also genetic algorithm (GA) based methods.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115522961","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523703
D. Samardzija, M. Pilipovic, D. Marijan, Jaroslav Farkaš, M. Temerinac
In this study we analyze performance of linear single user multiple-input multiple-output (SU-MIMO) detector applied in 3GPP LTE wireless systems. We consider minimum mean square error (MMSE) linear detectors based on (i) explicit matrix inversion, and (ii) adaptive gradient algorithm. We present the average achievable data rates as a function of different mobile terminal speeds, using the Jakes model, with symbol-by-symbol temporal variations. Mean and cell-edge rates are determined using two-dimensional multi-cell model. The LTE-specific reference signal (i.e., pilot) arrangements are considered. In addition, the implementation complexity is analyzed. At the expense of higher implementation complexity, for higher mobile terminal speeds and signal-to-interference-and-noise ratio (SLNR) the detector based on explicit matrix inversion outperforms the one based on the adaptive gradient algorithm. Furthermore, we show that a corresponding single-input multiple-output (SIMO) solution outperforms MIMO for moderate and high mobile terminal speeds. In addition, complexity-wise the SIMO transmission is shown to be more efficient. The results indicate that the MIMO transmission with linear detection should be applied only in a very limited number of channel conditions: (i) high SINR, and (ii) low mobility. This study may be used as a basis for establishing a trade-off between the data rates, complexity and multiple antenna arrangements.
{"title":"Performance of LTE linear MIMO detectors: Achievable data rates and complexity","authors":"D. Samardzija, M. Pilipovic, D. Marijan, Jaroslav Farkaš, M. Temerinac","doi":"10.1109/ISCE.2010.5523703","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523703","url":null,"abstract":"In this study we analyze performance of linear single user multiple-input multiple-output (SU-MIMO) detector applied in 3GPP LTE wireless systems. We consider minimum mean square error (MMSE) linear detectors based on (i) explicit matrix inversion, and (ii) adaptive gradient algorithm. We present the average achievable data rates as a function of different mobile terminal speeds, using the Jakes model, with symbol-by-symbol temporal variations. Mean and cell-edge rates are determined using two-dimensional multi-cell model. The LTE-specific reference signal (i.e., pilot) arrangements are considered. In addition, the implementation complexity is analyzed. At the expense of higher implementation complexity, for higher mobile terminal speeds and signal-to-interference-and-noise ratio (SLNR) the detector based on explicit matrix inversion outperforms the one based on the adaptive gradient algorithm. Furthermore, we show that a corresponding single-input multiple-output (SIMO) solution outperforms MIMO for moderate and high mobile terminal speeds. In addition, complexity-wise the SIMO transmission is shown to be more efficient. The results indicate that the MIMO transmission with linear detection should be applied only in a very limited number of channel conditions: (i) high SINR, and (ii) low mobility. This study may be used as a basis for establishing a trade-off between the data rates, complexity and multiple antenna arrangements.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127041529","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5522715
JongGyu Oh, J. Kim
We propose a simple and robust carrier frequency recovery (CFR) scheme for DVB-S2 receivers. The proposed coarse CFR scheme employs a modified Mengali and Morelli (M&M) algorithm and recovers a coarse carrier frequency offset (CFO) accurately. After coarse CFR, a fine CFR scheme that employs a simple pilot block correlation algorithm recovers a residual CFO. The proposed scheme shows a bit error rate (BER) performance that is almost the same as the conventional scheme, and reduces the hardware complexity. In addition, when a normalized CFO is larger than 25%, the proposed scheme could achieve carrier synchronization (the conventional scheme might not achieve carrier synchronization).
提出了一种简单、鲁棒的DVB-S2接收机载波频率恢复(CFR)方案。该方案采用改进的Mengali and Morelli (M&M)算法，能够准确地恢复粗载波频偏(CFO)。在粗CFR之后，采用简单导频块相关算法的精细CFR方案恢复残差CFR。该方案具有与传统方案基本相同的误码率性能，并降低了硬件复杂度。此外，当归一化CFO大于25%时，所提方案可以实现载波同步(常规方案可能无法实现载波同步)。
{"title":"A simple and robust carrier frequency recovery scheme for DVB-S2 systems","authors":"JongGyu Oh, J. Kim","doi":"10.1109/ISCE.2010.5522715","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5522715","url":null,"abstract":"We propose a simple and robust carrier frequency recovery (CFR) scheme for DVB-S2 receivers. The proposed coarse CFR scheme employs a modified Mengali and Morelli (M&M) algorithm and recovers a coarse carrier frequency offset (CFO) accurately. After coarse CFR, a fine CFR scheme that employs a simple pilot block correlation algorithm recovers a residual CFO. The proposed scheme shows a bit error rate (BER) performance that is almost the same as the conventional scheme, and reduces the hardware complexity. In addition, when a normalized CFO is larger than 25%, the proposed scheme could achieve carrier synchronization (the conventional scheme might not achieve carrier synchronization).","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"47 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133160793","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 : 2010-06-07DOI: 10.1109/ISCE.2010.5523256
Thilo Ernst, A. Schramm
This paper introduces FlashFind, an on-device search engine for making the vast amounts of digital content stored on today's flash memory-enabled mobile devices (PMP's, PND's, e-readers, smart phones) instantly accessible through a single-widget search interface. Without network access, FlashFind provides a search experience comparable to that of standard web search engines. More than that, the search is fully incremental and prefix-based, i.e. results are shown shortly after each key press, and instead of entire words, the user mostly needs to type only a small number of characters until the desired result is found. The pilot application, implemented on Windows Mobile smart phones and on Linux, provides near-instantaneous global search-based selection among the streets, points of interest and cities in a map of Western Europe (-10 millions of entries) and is being integrated into a commercial navigation application. The patent-pending FlashFind technology is equally capable to search other coarsely-structured text-based or text-annotated spatial or non-spatial content, e.g. collections of e-books on an e-reader device. In contrast to server or desktop search solutions, FlashFind is optimized for the limitations of mobile devices in terms of CPU, main memory, and interaction constraints (e.g. having only a phone keypad). Ongoing work is targeted at fuzzy search, at new applications and device classes, and at integrating our search technology with other innovative input methods.
{"title":"FlashFind: Responsive search in large datasets on mobile devices","authors":"Thilo Ernst, A. Schramm","doi":"10.1109/ISCE.2010.5523256","DOIUrl":"https://doi.org/10.1109/ISCE.2010.5523256","url":null,"abstract":"This paper introduces FlashFind, an on-device search engine for making the vast amounts of digital content stored on today's flash memory-enabled mobile devices (PMP's, PND's, e-readers, smart phones) instantly accessible through a single-widget search interface. Without network access, FlashFind provides a search experience comparable to that of standard web search engines. More than that, the search is fully incremental and prefix-based, i.e. results are shown shortly after each key press, and instead of entire words, the user mostly needs to type only a small number of characters until the desired result is found. The pilot application, implemented on Windows Mobile smart phones and on Linux, provides near-instantaneous global search-based selection among the streets, points of interest and cities in a map of Western Europe (-10 millions of entries) and is being integrated into a commercial navigation application. The patent-pending FlashFind technology is equally capable to search other coarsely-structured text-based or text-annotated spatial or non-spatial content, e.g. collections of e-books on an e-reader device. In contrast to server or desktop search solutions, FlashFind is optimized for the limitations of mobile devices in terms of CPU, main memory, and interaction constraints (e.g. having only a phone keypad). Ongoing work is targeted at fuzzy search, at new applications and device classes, and at integrating our search technology with other innovative input methods.","PeriodicalId":403652,"journal":{"name":"IEEE International Symposium on Consumer Electronics (ISCE 2010)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117262563","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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