Pub Date : 2020-10-08DOI: 10.1109/ATC50776.2020.9255446
M. Baranava, Dzmitry Hvazdouski Vladislav Volcheck, V. Stempitsky, Dao Dinh Ha, Trung Tran Tuan
The GaN high electron mobility transistor (HEMT) thermal characteristics were evaluated employing an integrated approach based on the combined use of ab initio (first-principles) and device simulations. The necessity of utilizing such a method arises when model parameters required for device simulation are unavailable or not suited to certain conditions. A fine example is thermal conductivity of crystalline materials, which is strongly dependent on the defect density, isotopic purity and temperature. Since the developed temperature due to self-heating is highly sensitive to the thermal conductivities of certain regions of the device structure, it is of great importance to use correct thermal conductivity models that are incorporated into the heat flow equation. A combination of ab initio calculations and solutions of the linearized phonon Boltzmann transport equation is a high-end tool to estimate the thermal properties of crystalline materials. In this paper, firstly, the values of the thermal conductivity and thermal capacity of AlN, GaN, Al0.21Ga0.79N and Al0.5Ga0.5N were calculated in the range of temperature from 20 K to 1000 K. Secondly, device simulation of a GaN HEMT was performed and the thermal characteristics were evaluated.
{"title":"GaN HEMT Thermal Characteristics Evaluation Using an Integrated Approach Based on the Combined Use of First-Principles and Device Simulations","authors":"M. Baranava, Dzmitry Hvazdouski Vladislav Volcheck, V. Stempitsky, Dao Dinh Ha, Trung Tran Tuan","doi":"10.1109/ATC50776.2020.9255446","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255446","url":null,"abstract":"The GaN high electron mobility transistor (HEMT) thermal characteristics were evaluated employing an integrated approach based on the combined use of ab initio (first-principles) and device simulations. The necessity of utilizing such a method arises when model parameters required for device simulation are unavailable or not suited to certain conditions. A fine example is thermal conductivity of crystalline materials, which is strongly dependent on the defect density, isotopic purity and temperature. Since the developed temperature due to self-heating is highly sensitive to the thermal conductivities of certain regions of the device structure, it is of great importance to use correct thermal conductivity models that are incorporated into the heat flow equation. A combination of ab initio calculations and solutions of the linearized phonon Boltzmann transport equation is a high-end tool to estimate the thermal properties of crystalline materials. In this paper, firstly, the values of the thermal conductivity and thermal capacity of AlN, GaN, Al0.21Ga0.79N and Al0.5Ga0.5N were calculated in the range of temperature from 20 K to 1000 K. Secondly, device simulation of a GaN HEMT was performed and the thermal characteristics were evaluated.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125889489","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 : 2020-10-08DOI: 10.1109/ATC50776.2020.9255452
Ho Duc Tam Linh, Nguyen Van Quang, Dao Duy Tu, Nguyen Van An, V. Q. Phuoc
We propose a 4x4 small size optical mode switch applied for photonics integrated circuits. The proposed device consists of four Multimode Interference (MMI) couplers based on silicon material and ten phase shifters appropriately placed between ones. The fundamental modes at the input are selectively switched to the desired outputs by controlling the phase shifters. Through a beam propagation simulation method (BPM) combined with an effective index method (EIM), we evaluate the efficiency of optical conversion when transmitting signals from any input to arbitrary outputs of the device. At the center wavelength of 1.55 µm, the insertion loss is always less than 0.3 dB, and the crosstalk is always from -80 dB to -30 dB in the entire C-band.
{"title":"Integrated silicon optical switch for high-speed network-on-chip","authors":"Ho Duc Tam Linh, Nguyen Van Quang, Dao Duy Tu, Nguyen Van An, V. Q. Phuoc","doi":"10.1109/ATC50776.2020.9255452","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255452","url":null,"abstract":"We propose a 4x4 small size optical mode switch applied for photonics integrated circuits. The proposed device consists of four Multimode Interference (MMI) couplers based on silicon material and ten phase shifters appropriately placed between ones. The fundamental modes at the input are selectively switched to the desired outputs by controlling the phase shifters. Through a beam propagation simulation method (BPM) combined with an effective index method (EIM), we evaluate the efficiency of optical conversion when transmitting signals from any input to arbitrary outputs of the device. At the center wavelength of 1.55 µm, the insertion loss is always less than 0.3 dB, and the crosstalk is always from -80 dB to -30 dB in the entire C-band.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129931783","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 : 2020-10-08DOI: 10.1109/ATC50776.2020.9255430
Angie A. G. Liong, Lenin Gopal, F. Juwono, C. W. Chiong, Y. Rong
Two-way relay-based power-line communication (PLC) has been used in many smart grid applications. It is necessary to model the channel characteristics of such system in order to design a reliable communication link between premises and data centre. The channel transfer function (CTF) is preferred to be found using the bottom-up approach, as it represents the true topology of the PLC network. In this paper, we model a bottom-up multipath channel model for single relay two-way PLC channel based on transmission and reflection coefficients. We also compare the proposed model with the ABCD method and the voltage ratio approach (VRA) method. We show that the multipath model can well represent the two-way relay-based PLC channel.
{"title":"A Comparison of Three-node Two-way PLC Channel Models","authors":"Angie A. G. Liong, Lenin Gopal, F. Juwono, C. W. Chiong, Y. Rong","doi":"10.1109/ATC50776.2020.9255430","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255430","url":null,"abstract":"Two-way relay-based power-line communication (PLC) has been used in many smart grid applications. It is necessary to model the channel characteristics of such system in order to design a reliable communication link between premises and data centre. The channel transfer function (CTF) is preferred to be found using the bottom-up approach, as it represents the true topology of the PLC network. In this paper, we model a bottom-up multipath channel model for single relay two-way PLC channel based on transmission and reflection coefficients. We also compare the proposed model with the ABCD method and the voltage ratio approach (VRA) method. We show that the multipath model can well represent the two-way relay-based PLC channel.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114255493","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 : 2020-10-08DOI: 10.1109/ATC50776.2020.9255454
Hai-Nam Le, Van-Sang Doan, D. Le, Huu-Hung Nguyen, Thien Huynh-The, Khanh Le-Ha, Van‐Phuc Hoang
This paper demonstrates the performance evaluation of UAV detection based on micro-Doppler radar image data with the proposed inception-residual neural network (IRNN). Accordingly, the network is designed and analyzed by changing network hyper-parameters through experiment with the Real Doppler RAD-DAR (RDRD) dataset that is collected by the practical measurements. Numerical analysis results show that the proposed network with 16 filters yield a good trade-off between accuracy and time-consuming performances. Moreover, the network is taken into account for competing with three other networks. Due to inception-residual structure, the proposed network remarkably outperforms other ones.
{"title":"Micro-Doppler-Radar-Based UAV Detection Using Inception-Residual Neural Network","authors":"Hai-Nam Le, Van-Sang Doan, D. Le, Huu-Hung Nguyen, Thien Huynh-The, Khanh Le-Ha, Van‐Phuc Hoang","doi":"10.1109/ATC50776.2020.9255454","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255454","url":null,"abstract":"This paper demonstrates the performance evaluation of UAV detection based on micro-Doppler radar image data with the proposed inception-residual neural network (IRNN). Accordingly, the network is designed and analyzed by changing network hyper-parameters through experiment with the Real Doppler RAD-DAR (RDRD) dataset that is collected by the practical measurements. Numerical analysis results show that the proposed network with 16 filters yield a good trade-off between accuracy and time-consuming performances. Moreover, the network is taken into account for competing with three other networks. Due to inception-residual structure, the proposed network remarkably outperforms other ones.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133796532","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 : 2020-10-08DOI: 10.1109/atc50776.2020.9255441
{"title":"[Copyright notice]","authors":"","doi":"10.1109/atc50776.2020.9255441","DOIUrl":"https://doi.org/10.1109/atc50776.2020.9255441","url":null,"abstract":"","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114677507","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 : 2020-10-08DOI: 10.1109/ATC50776.2020.9255451
Thi Ha Bui, Chinh Doan Tran, G. Bach
This paper focuses on the design and manufacture of the carrier phase modulation of satellite’s transmitter at S band. Unlike other traditional carrier phase modulators, this modulator was designed with the direct RF input. The high frequency signal was directly modulated through this carrier phase modulation. The direct brings many advantages, such as: smaller size, lower cost, easier integration, easier replacement, etc. But it also cause the signal to be greatly attenuated. To overcome this disadvantage, the authors have used a suitable power amplification solution to compensate for these losses. This design achieved the low conversion loss and wide bandwidth to satisfy not only the requirements of Vietnamese MicroSatellite but also other satellite in S band.
{"title":"Design, Fabrication Transmitter Modulator at S band for MicroSatellite with the direct RF input","authors":"Thi Ha Bui, Chinh Doan Tran, G. Bach","doi":"10.1109/ATC50776.2020.9255451","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255451","url":null,"abstract":"This paper focuses on the design and manufacture of the carrier phase modulation of satellite’s transmitter at S band. Unlike other traditional carrier phase modulators, this modulator was designed with the direct RF input. The high frequency signal was directly modulated through this carrier phase modulation. The direct brings many advantages, such as: smaller size, lower cost, easier integration, easier replacement, etc. But it also cause the signal to be greatly attenuated. To overcome this disadvantage, the authors have used a suitable power amplification solution to compensate for these losses. This design achieved the low conversion loss and wide bandwidth to satisfy not only the requirements of Vietnamese MicroSatellite but also other satellite in S band.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"05 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115249818","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 : 2020-10-08DOI: 10.1109/ATC50776.2020.9255473
T. Umezawa, P. Dat, A. Kanno, N. Yamamoto
High data rates and low latencies will be indispensable in next generation communication devices. In order to achieve these targets, the use of wireless communication technology combined with photonics and optics is expected to have significant potential. In this paper, we present a key device for advanced fiber wireless and optical wireless communications. A new device integrated with a 100 GHz uni-travelling carrier photodetector and a 100 GHz pHEMT amplifier is introduced for high data rate fiber wireless communication applications operating at data rates above 20 Gbps. For optical wireless communication applications, another novel two-dimensional photodetector array (2D-PDA) device is introduced, and demonstrated for 100 Gbps high data rate communications using the wavelength division multiplexing (WDM) technology in free-space.
{"title":"Fiber wireless and optical wireless communications using high-speed photonic devices","authors":"T. Umezawa, P. Dat, A. Kanno, N. Yamamoto","doi":"10.1109/ATC50776.2020.9255473","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255473","url":null,"abstract":"High data rates and low latencies will be indispensable in next generation communication devices. In order to achieve these targets, the use of wireless communication technology combined with photonics and optics is expected to have significant potential. In this paper, we present a key device for advanced fiber wireless and optical wireless communications. A new device integrated with a 100 GHz uni-travelling carrier photodetector and a 100 GHz pHEMT amplifier is introduced for high data rate fiber wireless communication applications operating at data rates above 20 Gbps. For optical wireless communication applications, another novel two-dimensional photodetector array (2D-PDA) device is introduced, and demonstrated for 100 Gbps high data rate communications using the wavelength division multiplexing (WDM) technology in free-space.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123268130","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 : 2020-10-08DOI: 10.1109/ATC50776.2020.9255367
T. Pham
The evolution of radio access networks poses significant challenges to the transport networks, including backhaul and fronthaul systems. Ultra-dense small-cell networks in high frequency bands are being considered promising solutions. For beyond 2020 networks, frequency bands up to 100 GHz can be considered for achieving the target increase of 1000 times in the throughput to end users. The deployment of ultra-dense small cells in high frequency bands requires a massive deployment of mobile transport networks. In addition, stringent requirement of low latency sets significant constraints on the transport systems. An analog waveform transmission of mobile signals, especially of those in the millimeter-wave bands, over the transport links would be very attractive to reduce the latency, data rate, and simplify antenna sites. However, for transporting radio signals to a huge number of antenna sites, the use of only fiber-optic transport links will not be sufficient due to the difficulty in the installation of fiber cables, especially in ultra-dense urban areas. An orchestration of different transmission technologies, including wired and wireless systems, would be very important to facilitate the deployment of ultra-dense small cells in future mobile networks. In this paper, we introduce an orchestration of fiber-optics, free-space optics, millimeter-wave, and hybrid systems for high-speed and flexible transmission of mobile signals. We present examples of proof-of-concept demonstrations for each system, indicating that the proposed systems can meet the performance requirements of future mobile signals.
{"title":"Orchestration of Wired and Wireless Systems for Future Mobile Transport Network","authors":"T. Pham","doi":"10.1109/ATC50776.2020.9255367","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255367","url":null,"abstract":"The evolution of radio access networks poses significant challenges to the transport networks, including backhaul and fronthaul systems. Ultra-dense small-cell networks in high frequency bands are being considered promising solutions. For beyond 2020 networks, frequency bands up to 100 GHz can be considered for achieving the target increase of 1000 times in the throughput to end users. The deployment of ultra-dense small cells in high frequency bands requires a massive deployment of mobile transport networks. In addition, stringent requirement of low latency sets significant constraints on the transport systems. An analog waveform transmission of mobile signals, especially of those in the millimeter-wave bands, over the transport links would be very attractive to reduce the latency, data rate, and simplify antenna sites. However, for transporting radio signals to a huge number of antenna sites, the use of only fiber-optic transport links will not be sufficient due to the difficulty in the installation of fiber cables, especially in ultra-dense urban areas. An orchestration of different transmission technologies, including wired and wireless systems, would be very important to facilitate the deployment of ultra-dense small cells in future mobile networks. In this paper, we introduce an orchestration of fiber-optics, free-space optics, millimeter-wave, and hybrid systems for high-speed and flexible transmission of mobile signals. We present examples of proof-of-concept demonstrations for each system, indicating that the proposed systems can meet the performance requirements of future mobile signals.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"407 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114927441","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 : 2020-10-08DOI: 10.1109/ATC50776.2020.9255463
T. Kojima, Yota Yamamura
Walsh-Hadamard code division multiplexing (WHCDM) is suitable for helicopter satellite communications as it has robustness against a periodic channel blockage due to rotor blades. Modified WHCDM (MWHCDM) enhances robustness and achieves excellent bit error rate performance. However, the initial acquisition performance of MWHCDM is inferior to that of WHCDM, which has less robustness. To solve this problem, we propose a novel initial acquisition scheme for MWHCDM in this paper. The proposed scheme is combined with a carrier recovery method for MWHCDM to improve acquisition performance. Additionally, it employs a novel evaluation function. The computer simulation confirms the proposed scheme remarkably improves the initial acquisition performance.
{"title":"An Initial Acquisition Scheme Combined with Carrier Recovery for Modified Walsh-Hadamard Code Division Multiplexing","authors":"T. Kojima, Yota Yamamura","doi":"10.1109/ATC50776.2020.9255463","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255463","url":null,"abstract":"Walsh-Hadamard code division multiplexing (WHCDM) is suitable for helicopter satellite communications as it has robustness against a periodic channel blockage due to rotor blades. Modified WHCDM (MWHCDM) enhances robustness and achieves excellent bit error rate performance. However, the initial acquisition performance of MWHCDM is inferior to that of WHCDM, which has less robustness. To solve this problem, we propose a novel initial acquisition scheme for MWHCDM in this paper. The proposed scheme is combined with a carrier recovery method for MWHCDM to improve acquisition performance. Additionally, it employs a novel evaluation function. The computer simulation confirms the proposed scheme remarkably improves the initial acquisition performance.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132889954","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 : 2020-10-08DOI: 10.1109/ATC50776.2020.9255467
Pham Manh Ha, Nguyen Huu Tho, Nguyen Thanh, Q. Nguyen-The
This paper presents a wide-band referenceless clock and data recovery (CDR) with a UP pulse selector in frequency acquisition scheme that decreases frequency tracking time. By combining coarse and fine frequency tracking loops, the CDR obtains a capture range from 0.3 Gb/s to 3.2 Gb/s, which is limited only by the operating frequency of the voltage control oscillator (VCO). A digital frequency band selector for the wideband VCO is presented as well to select an exact frequency band of the VCO. The proposed CDR is implemented in 180 nm CMOS process, achieves the frequency acquisition time of 0.8 μs with tracking range of 300 MHz and 10-ps peak-to-peak jitter of recovery clock at 3 Gb/s.
{"title":"An Improved Wide-Band Referenceless CDR with UP Pulse Selector for Frequency Acquisition","authors":"Pham Manh Ha, Nguyen Huu Tho, Nguyen Thanh, Q. Nguyen-The","doi":"10.1109/ATC50776.2020.9255467","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255467","url":null,"abstract":"This paper presents a wide-band referenceless clock and data recovery (CDR) with a UP pulse selector in frequency acquisition scheme that decreases frequency tracking time. By combining coarse and fine frequency tracking loops, the CDR obtains a capture range from 0.3 Gb/s to 3.2 Gb/s, which is limited only by the operating frequency of the voltage control oscillator (VCO). A digital frequency band selector for the wideband VCO is presented as well to select an exact frequency band of the VCO. The proposed CDR is implemented in 180 nm CMOS process, achieves the frequency acquisition time of 0.8 μs with tracking range of 300 MHz and 10-ps peak-to-peak jitter of recovery clock at 3 Gb/s.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131654502","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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