Pub Date : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564426
N. Krasnova, V. Pavlov, K. Solovjev, I. Marzinovsky
In the article different techniques for processing of spectrometric data to be fixed under executing diagnostic methods of electron spectroscopy are discussed. Data processing includes a preliminary analysis of signal, a filtration and a smoothing, distinguishing useful signal and estimating its parameters, and finally, interpretation of the result. First stages are based on methods of digital signal processing, some of them are considered in the article. Interpretation of the results being measured by a detection system is assumed an analysis of an instrument function of electron spectrometer. It is founded that the instrumental function is one depending on a ratio of particle energy to device adjustment energy. The main object of data interpretation is to distinguish a source energy spectrum from a current registered by detector. The last problem is a strict integral equation of convolution type. Several deconvolution algorithms are applied for a testing problem, and their results are compared each other. It is shown that some of deconvolution algorithms are preferable as data processing gives opportunity to improve energy resolution of the energy spectrometer without changing construction of the system.
{"title":"Deconvolution algorithms for electron spectroscopy","authors":"N. Krasnova, V. Pavlov, K. Solovjev, I. Marzinovsky","doi":"10.1109/EEXPOLYTECH.2018.8564426","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564426","url":null,"abstract":"In the article different techniques for processing of spectrometric data to be fixed under executing diagnostic methods of electron spectroscopy are discussed. Data processing includes a preliminary analysis of signal, a filtration and a smoothing, distinguishing useful signal and estimating its parameters, and finally, interpretation of the result. First stages are based on methods of digital signal processing, some of them are considered in the article. Interpretation of the results being measured by a detection system is assumed an analysis of an instrument function of electron spectrometer. It is founded that the instrumental function is one depending on a ratio of particle energy to device adjustment energy. The main object of data interpretation is to distinguish a source energy spectrum from a current registered by detector. The last problem is a strict integral equation of convolution type. Several deconvolution algorithms are applied for a testing problem, and their results are compared each other. It is shown that some of deconvolution algorithms are preferable as data processing gives opportunity to improve energy resolution of the energy spectrometer without changing construction of the system.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126855807","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564443
Aleksey O. Pergushev, V. Sorotsky
When amplifying signals with a high peak to average power ratio, the efficiency of linear radio frequency (RF) power amplifiers (PA) is reduced to about 30%. This flaw can be noticeably corrected by using envelope tracking technology. However, using switched mode PAs of envelope signal (ES) is accompanied by the emergence of nonlinear distortions, which can appear as undesirable components in the RF PA signal spectrum. One of the ways to reduce the negative influence of the switched mode is to use ES PA of multicell structure. The paper covers the issues of the ES PA number of cells influence on its efficiency and output signal distortion, as well as its influence on the efficiency and output signal distortion of the RF PA. It is shown that rational choice of the number of cells allows to increase the efficiency of ES PA from 94 through 98% and to reduce the level of intermodulation components in the envelope signal spectrum by 20 … 25 dB.
{"title":"Signal Distortion Decreasing in Envelope Tracking Power Amplifiers","authors":"Aleksey O. Pergushev, V. Sorotsky","doi":"10.1109/EEXPOLYTECH.2018.8564443","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564443","url":null,"abstract":"When amplifying signals with a high peak to average power ratio, the efficiency of linear radio frequency (RF) power amplifiers (PA) is reduced to about 30%. This flaw can be noticeably corrected by using envelope tracking technology. However, using switched mode PAs of envelope signal (ES) is accompanied by the emergence of nonlinear distortions, which can appear as undesirable components in the RF PA signal spectrum. One of the ways to reduce the negative influence of the switched mode is to use ES PA of multicell structure. The paper covers the issues of the ES PA number of cells influence on its efficiency and output signal distortion, as well as its influence on the efficiency and output signal distortion of the RF PA. It is shown that rational choice of the number of cells allows to increase the efficiency of ES PA from 94 through 98% and to reduce the level of intermodulation components in the envelope signal spectrum by 20 … 25 dB.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115105252","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564391
S. Ivanov, A. Lavrov, I. Saenko
The results of experimental studies of the main characteristics of commercially available analog fiber-optic links for microwave signals transmission are presented. The measurements were carried out for transmitters of two types: with direct modulation of Fabry-Perot resonator laser emission intensity through laser injection current modulation and with external modulation of the DFB laser emission intensity in the Mach-Zehnder modulator. Both the optical spectra of the modulated radiation at the transmitter output and the corresponding spectra of signals with a frequency band up to 18 GHz at the output of photodetector modules of analog links have been measured. Special attention was paid to time delay measurements into links' transceiver and receiver modules.
{"title":"Main Characteristics Study of Analog Fiber-Optic Links with Direct and External Modulation in Transmitter Modules","authors":"S. Ivanov, A. Lavrov, I. Saenko","doi":"10.1109/EEXPOLYTECH.2018.8564391","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564391","url":null,"abstract":"The results of experimental studies of the main characteristics of commercially available analog fiber-optic links for microwave signals transmission are presented. The measurements were carried out for transmitters of two types: with direct modulation of Fabry-Perot resonator laser emission intensity through laser injection current modulation and with external modulation of the DFB laser emission intensity in the Mach-Zehnder modulator. Both the optical spectra of the modulated radiation at the transmitter output and the corresponding spectra of signals with a frequency band up to 18 GHz at the output of photodetector modules of analog links have been measured. Special attention was paid to time delay measurements into links' transceiver and receiver modules.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129690019","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564397
D. Dyubo, O. Tsybin
Photodiodes detect the separation of charge carriers in a semiconductor upon irradiation with photons. Recently, new high sensitivity low noise photodetector-integrator based on a PIN diode with embedded gate-control potential barrier was developed. In the study of its characteristics, were observed effects of external particles on the surface of the substrate. In this paper, we studied the effect of surface charges on the potential distribution and charge carriers motion in such PIN diode by means computer simulation using the software Comsol Multiphysics. The appropriate mechanism of surface charge operation was revealed and estimated. The obtained results broaden the possibilities of using this PIN diode as a radiation detector, a particle detector, a biochemical sensor, etc.
{"title":"PIN Diode-Triode with Embedded Gate-Control Potential Barrier: Surface Charge Effects","authors":"D. Dyubo, O. Tsybin","doi":"10.1109/EEXPOLYTECH.2018.8564397","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564397","url":null,"abstract":"Photodiodes detect the separation of charge carriers in a semiconductor upon irradiation with photons. Recently, new high sensitivity low noise photodetector-integrator based on a PIN diode with embedded gate-control potential barrier was developed. In the study of its characteristics, were observed effects of external particles on the surface of the substrate. In this paper, we studied the effect of surface charges on the potential distribution and charge carriers motion in such PIN diode by means computer simulation using the software Comsol Multiphysics. The appropriate mechanism of surface charge operation was revealed and estimated. The obtained results broaden the possibilities of using this PIN diode as a radiation detector, a particle detector, a biochemical sensor, etc.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129748585","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564432
Matvei Kholmov, Dmitrii K. Fadeev
In this paper the algorithm of Active Constellation Extension (ACE) for peak-to-average power ratio (PAPR) reduction in spectral efficient frequency division multiplexing (SEFDM) systems is considered. Overall system performance is investigated taking into account influence of non-linear power amplifier (PA). Values of ACE parameters corresponding to the best bit error rate (BER) performance are obtained. Two types of PA models are considered: solid state power amplifier (SSPA) and traveling-wave tube amplifier (TWTA).
{"title":"The Effectiveness of Active Constellation Extension for PAPR Reduction in SEFDM Systems","authors":"Matvei Kholmov, Dmitrii K. Fadeev","doi":"10.1109/EEXPOLYTECH.2018.8564432","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564432","url":null,"abstract":"In this paper the algorithm of Active Constellation Extension (ACE) for peak-to-average power ratio (PAPR) reduction in spectral efficient frequency division multiplexing (SEFDM) systems is considered. Overall system performance is investigated taking into account influence of non-linear power amplifier (PA). Values of ACE parameters corresponding to the best bit error rate (BER) performance are obtained. Two types of PA models are considered: solid state power amplifier (SSPA) and traveling-wave tube amplifier (TWTA).","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121158052","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564403
Alexandr E. Sinev, N. Andreeva, A. A. Petrov, A. Bobkov
Thin film oxide bilayers are prospective systems for application in ReRAM devices. Its resistance state could be electrically tuned in the range of seven orders of magnitude. Together with a bipolar resistive switching occurred relatively to the previously tuned resistance state, these structures could significantly increase the density of ReRAM and provide a multilevel logic implementation at the hardware level. The main problem hampering integration of TiO2/Al2O3 bilayers with multilevel resistive switching in the current ReRAM technology is a deviation of its actual electrical behavior over the switching cycles. Based on the analysis of our experimental results, we develop a model, which explains possible reasons for electrical parameter deviation in heterogeneous oxide systems based on TiO2/Al2O3 bilayers. The proposed approach makes possible to describe quantitatively a bipolar resistive switching in TiO2/Al2O3 bilayers, relatively to an arbitrary chosen level of the system's resistance in the whole range of the resistances amounting to almost seven orders of magnitude.
{"title":"Multilevel Resistive Switching in Heterogeneous Oxide System Based on TiO2/Al2O3 Bilayers for ReRAM Applications: Problems and Prospects","authors":"Alexandr E. Sinev, N. Andreeva, A. A. Petrov, A. Bobkov","doi":"10.1109/EEXPOLYTECH.2018.8564403","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564403","url":null,"abstract":"Thin film oxide bilayers are prospective systems for application in ReRAM devices. Its resistance state could be electrically tuned in the range of seven orders of magnitude. Together with a bipolar resistive switching occurred relatively to the previously tuned resistance state, these structures could significantly increase the density of ReRAM and provide a multilevel logic implementation at the hardware level. The main problem hampering integration of TiO2/Al2O3 bilayers with multilevel resistive switching in the current ReRAM technology is a deviation of its actual electrical behavior over the switching cycles. Based on the analysis of our experimental results, we develop a model, which explains possible reasons for electrical parameter deviation in heterogeneous oxide systems based on TiO2/Al2O3 bilayers. The proposed approach makes possible to describe quantitatively a bipolar resistive switching in TiO2/Al2O3 bilayers, relatively to an arbitrary chosen level of the system's resistance in the whole range of the resistances amounting to almost seven orders of magnitude.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"120 37","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113940377","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564411
Ilnur R. Ishkaev, A. Shevelev, A. Ovsyannikova, S. Zavjalov, S. Volvenko, S. Makarov
In this paper the research on realization of transmitter for optimal signals which provide high spectral efficiency without significant energy losses is done. HackRF One is chosen as a transmitter. Experiments showed that peak-to-average power ratio (PAPR) of transmitted sequence is higher than theoretical both in case of “classic” signals with rectangular envelope form and optimal ones (with and without restriction on peak-to-average power ratio). It is caused by parasitic amplitude modulation. However, experimental values of PAPR of optimal signals are less than ones of “classic” signals due to absence of transient processes. In future works BER performance of implemented transmitter will be estimated.
{"title":"Possibility of Peak-to-Avegare Power Ratio Reduction by Application of Optimal Signal for Transmitter Based on SDR HackRF One","authors":"Ilnur R. Ishkaev, A. Shevelev, A. Ovsyannikova, S. Zavjalov, S. Volvenko, S. Makarov","doi":"10.1109/EEXPOLYTECH.2018.8564411","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564411","url":null,"abstract":"In this paper the research on realization of transmitter for optimal signals which provide high spectral efficiency without significant energy losses is done. HackRF One is chosen as a transmitter. Experiments showed that peak-to-average power ratio (PAPR) of transmitted sequence is higher than theoretical both in case of “classic” signals with rectangular envelope form and optimal ones (with and without restriction on peak-to-average power ratio). It is caused by parasitic amplitude modulation. However, experimental values of PAPR of optimal signals are less than ones of “classic” signals due to absence of transient processes. In future works BER performance of implemented transmitter will be estimated.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126538121","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564370
E. Maraeva, N. Permiakov, S. Tulenin
The work is aimed to the study of materials based on indium sulphide In2S3 obtained by chemical bath deposition from aqueous solutions. The layers are studied by optical, atomic force microscopy, Raman spectroscopy, nitrogen thermal desorption. The thermostability of the obtained structures is shown in the temperature range from room temperature to 350 ° C.
{"title":"The Research on the Thermostability of Metal Sulphides Nanomaterials Obtained via Chemical Bath Deposition Method","authors":"E. Maraeva, N. Permiakov, S. Tulenin","doi":"10.1109/EEXPOLYTECH.2018.8564370","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564370","url":null,"abstract":"The work is aimed to the study of materials based on indium sulphide In2S3 obtained by chemical bath deposition from aqueous solutions. The layers are studied by optical, atomic force microscopy, Raman spectroscopy, nitrogen thermal desorption. The thermostability of the obtained structures is shown in the temperature range from room temperature to 350 ° C.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125619426","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564407
A. Bobkov, D. Mazing, A. A. Ryabko, S. Nalimova, A. Semenova, A. Maximov, E. A. Levkevich, Vyacheslav Moshnikov
In this paper, we present a technique for the synthesis of zinc oxide nanorods and the study of their sensitivity to organic solvent vapors. Zinc oxide nanorods were synthesized by hydrothermal method. Investigation of gas-sensitive properties was carried out by the method of impedance spectroscopy. Studies of gas-sensitive properties of zinc oxide showed a significant response of the system to the vapor of reducing gases at room temperature. It is shown that the thickness of the seed layer and, correspondingly, the density of the structure on the basis of ZnO nanorods, strongly affect the sensitivity of the sensor.
{"title":"Study of Gas-Sensitive Properties of Zinc Oxide Nanorod Array at Room Temperature","authors":"A. Bobkov, D. Mazing, A. A. Ryabko, S. Nalimova, A. Semenova, A. Maximov, E. A. Levkevich, Vyacheslav Moshnikov","doi":"10.1109/EEXPOLYTECH.2018.8564407","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564407","url":null,"abstract":"In this paper, we present a technique for the synthesis of zinc oxide nanorods and the study of their sensitivity to organic solvent vapors. Zinc oxide nanorods were synthesized by hydrothermal method. Investigation of gas-sensitive properties was carried out by the method of impedance spectroscopy. Studies of gas-sensitive properties of zinc oxide showed a significant response of the system to the vapor of reducing gases at room temperature. It is shown that the thickness of the seed layer and, correspondingly, the density of the structure on the basis of ZnO nanorods, strongly affect the sensitivity of the sensor.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127415612","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564382
M. A. Zanina, A. Belov, S. Volvenko
This paper discusses the problems and methods of radiofrequency (RF) pulse parameters measurement. The frequency is assumed to be not known. The purpose of this work is to find out how accurately it is possible to measure the parameters of radiofrequency pulse signals. The definitions of main pulse parameters are discussed. The method for estimating time parameters of a pulse (pulse width, pulse rise time and pulse fall time) and the pulse amplitude are described in detail. In addition, the methods of measuring pulse tilt and overshoot are proposed. The description of the simulation procedure is given. The simulations were performed using synthetic test signals with various parameters and signal to noise ratio (SNR). The result of this work is the estimation of the accuracy of radiofrequency pulse parameters (including tilt and overshoot) measurement in the range of SNR from 5 dB to 25 dB.
{"title":"Estimation of Accuracy of Algorithm for Measuring Radiofrequency Pulse Parameters","authors":"M. A. Zanina, A. Belov, S. Volvenko","doi":"10.1109/EEXPOLYTECH.2018.8564382","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564382","url":null,"abstract":"This paper discusses the problems and methods of radiofrequency (RF) pulse parameters measurement. The frequency is assumed to be not known. The purpose of this work is to find out how accurately it is possible to measure the parameters of radiofrequency pulse signals. The definitions of main pulse parameters are discussed. The method for estimating time parameters of a pulse (pulse width, pulse rise time and pulse fall time) and the pulse amplitude are described in detail. In addition, the methods of measuring pulse tilt and overshoot are proposed. The description of the simulation procedure is given. The simulations were performed using synthetic test signals with various parameters and signal to noise ratio (SNR). The result of this work is the estimation of the accuracy of radiofrequency pulse parameters (including tilt and overshoot) measurement in the range of SNR from 5 dB to 25 dB.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"177 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114432292","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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