Pub Date : 2013-05-15DOI: 10.1109/ECTICON.2013.6559633
N. Siripon
This paper presents the new structure of the distributed oscillator. Based on the balanced oscillator concept, the new oscillator provides the two identical output signals using the extra transmission line. This oscillator is implemented on FR4. Then the output signals are investigated. According to the experimental results, the oscillator provides the free-running oscillating signal of 1.8 GHz. The magnitude and phase of the two outputs are tested. It is found that the signal of one output is lower than the combined output by approximately 3 dB. Furthermore, the injection-locked oscillator technique is employed to stabilize the oscillating signals and decrease the phase noise. In the locking state, it is found that the signal from the output of the Wilkinson divider is higher than the signal from one oscillator's output by about 3dB. This can also be confirmed the properties of the distributed oscillator's outputs.
{"title":"A novel design of distributed oscillator based on the balanced oscillator technique","authors":"N. Siripon","doi":"10.1109/ECTICON.2013.6559633","DOIUrl":"https://doi.org/10.1109/ECTICON.2013.6559633","url":null,"abstract":"This paper presents the new structure of the distributed oscillator. Based on the balanced oscillator concept, the new oscillator provides the two identical output signals using the extra transmission line. This oscillator is implemented on FR4. Then the output signals are investigated. According to the experimental results, the oscillator provides the free-running oscillating signal of 1.8 GHz. The magnitude and phase of the two outputs are tested. It is found that the signal of one output is lower than the combined output by approximately 3 dB. Furthermore, the injection-locked oscillator technique is employed to stabilize the oscillating signals and decrease the phase noise. In the locking state, it is found that the signal from the output of the Wilkinson divider is higher than the signal from one oscillator's output by about 3dB. This can also be confirmed the properties of the distributed oscillator's outputs.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129242172","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 : 2013-05-15DOI: 10.1109/ECTICON.2013.6559515
K. Eguchi, S. Pongswatd, T. Thepmanee, K. Fujimoto, H. Sasaki
A parallel-connected negative DC-DC converter using power saving techniques has been proposed in this paper. Unlike conventional negative converters, the proposed converter consists of four negative heap converters connected in parallel, where the power switch is driven by non-overlapped four-phase pulses cyclically. In two of the four negative heap converters, a part of the electric charge in parasitic capacitances is reused in each clock cycle. For this reason, the proposed converter can reduce energy loss than the conventional converters. The validity of the proposed technique was confirmed by simulation program with integrated circuit emphasis (SPICE) simulations and theoretical analysis. When the output load is 1 kΩ, the proposed converter was able to improve power efficiency more than 11% compared to the conventional converter.
{"title":"Power saving techniques to improve efficiency of a parallel-connected negative DC-DC converter","authors":"K. Eguchi, S. Pongswatd, T. Thepmanee, K. Fujimoto, H. Sasaki","doi":"10.1109/ECTICON.2013.6559515","DOIUrl":"https://doi.org/10.1109/ECTICON.2013.6559515","url":null,"abstract":"A parallel-connected negative DC-DC converter using power saving techniques has been proposed in this paper. Unlike conventional negative converters, the proposed converter consists of four negative heap converters connected in parallel, where the power switch is driven by non-overlapped four-phase pulses cyclically. In two of the four negative heap converters, a part of the electric charge in parasitic capacitances is reused in each clock cycle. For this reason, the proposed converter can reduce energy loss than the conventional converters. The validity of the proposed technique was confirmed by simulation program with integrated circuit emphasis (SPICE) simulations and theoretical analysis. When the output load is 1 kΩ, the proposed converter was able to improve power efficiency more than 11% compared to the conventional converter.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129055603","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 : 2013-05-15DOI: 10.1109/ECTICON.2013.6559559
Settaporn Sriwilai, T. Kasetkasem, T. Chanwimaluang, T. Srinark, T. Isshiki
The presence of mixed pixels is a recurring problem in extracting accurate land cover information from remote sensing images. To deal with the mixed-pixel problem, we propose to find the land cover map at the resolution higher than the observed remote sensing image. The process to obtain this higher resolution land cover map is called “super resolution land cover mapping (SRLCM).” In this work, we modeled the problem of the SRLCM as an image segmentation problem where the level set method can be applied to find the boarders between land cover classes at the sub-pixel accuracy. Our experimental results show that our proposed approach can significantly improve the classification accuracy over the Maximum likelihood classifier.
{"title":"A super-resolution mapping algorithm based on the level set method","authors":"Settaporn Sriwilai, T. Kasetkasem, T. Chanwimaluang, T. Srinark, T. Isshiki","doi":"10.1109/ECTICON.2013.6559559","DOIUrl":"https://doi.org/10.1109/ECTICON.2013.6559559","url":null,"abstract":"The presence of mixed pixels is a recurring problem in extracting accurate land cover information from remote sensing images. To deal with the mixed-pixel problem, we propose to find the land cover map at the resolution higher than the observed remote sensing image. The process to obtain this higher resolution land cover map is called “super resolution land cover mapping (SRLCM).” In this work, we modeled the problem of the SRLCM as an image segmentation problem where the level set method can be applied to find the boarders between land cover classes at the sub-pixel accuracy. Our experimental results show that our proposed approach can significantly improve the classification accuracy over the Maximum likelihood classifier.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121437934","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 : 2013-05-15DOI: 10.1109/ECTICON.2013.6559627
M. Saadi, L. Wuttisittikulkij, Yan Zhao, Kittisak Panlek, K. Woradit, P. Sangwongngam
Optical wireless communication has emerged as a promising complementary technology for Radio Frequency technology. Reliability and survivability of solid state lighting devices has attracted researchers and is gaining attention as they provide synergistically illumination and communication. Furthermore optical wireless communication is environmental friendly and also helps in energy conservation. In this paper various parameters for visible light and infrared link such as link accuracy, noise immunity have been studied. A simple algorithm has been described for localization and tracking for a full duplex optical wireless communication system.
{"title":"Performance analysis of optical wireless communication system using pulse width modulation","authors":"M. Saadi, L. Wuttisittikulkij, Yan Zhao, Kittisak Panlek, K. Woradit, P. Sangwongngam","doi":"10.1109/ECTICON.2013.6559627","DOIUrl":"https://doi.org/10.1109/ECTICON.2013.6559627","url":null,"abstract":"Optical wireless communication has emerged as a promising complementary technology for Radio Frequency technology. Reliability and survivability of solid state lighting devices has attracted researchers and is gaining attention as they provide synergistically illumination and communication. Furthermore optical wireless communication is environmental friendly and also helps in energy conservation. In this paper various parameters for visible light and infrared link such as link accuracy, noise immunity have been studied. A simple algorithm has been described for localization and tracking for a full duplex optical wireless communication system.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122543038","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 : 2013-05-15DOI: 10.1109/ECTICON.2013.6559533
Chetnaphat Praisuwanna, S. Khomfoi
The half bridge modular converter configuration is used to perform the charging pulses with both positive and negative pulse. The positive pulse charge permits the high peak current charge which leads to quick charging mode. The negative pulse and idle state can offer low battery temperature rise. The frequency used for pulse charge technique can be varied depending on the type and condition of a battery. PSIM 9.0.3 is utilized for simulation study and the 500 W prototype is developed to validate the proposed notion. The simulation and experimental results illustrate that the proposed pulse frequency charging technique requires shorter time to fully charge battery at SOC 80% comparing to conventional constant current and constant voltage technique about 3 times at same average charging current. The temperature rise of pulse frequency charging technique is less than a conventional one about 1°C: This can lead to quicker charge and longer battery lifetime. The results suggest that the proposed technique can be applied for an electric vehicle quick charger station.
{"title":"A pulse frequency technique for a quick charger","authors":"Chetnaphat Praisuwanna, S. Khomfoi","doi":"10.1109/ECTICON.2013.6559533","DOIUrl":"https://doi.org/10.1109/ECTICON.2013.6559533","url":null,"abstract":"The half bridge modular converter configuration is used to perform the charging pulses with both positive and negative pulse. The positive pulse charge permits the high peak current charge which leads to quick charging mode. The negative pulse and idle state can offer low battery temperature rise. The frequency used for pulse charge technique can be varied depending on the type and condition of a battery. PSIM 9.0.3 is utilized for simulation study and the 500 W prototype is developed to validate the proposed notion. The simulation and experimental results illustrate that the proposed pulse frequency charging technique requires shorter time to fully charge battery at SOC 80% comparing to conventional constant current and constant voltage technique about 3 times at same average charging current. The temperature rise of pulse frequency charging technique is less than a conventional one about 1°C: This can lead to quicker charge and longer battery lifetime. The results suggest that the proposed technique can be applied for an electric vehicle quick charger station.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124148375","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 : 2013-05-15DOI: 10.1109/ECTICON.2013.6559498
K. Chooruang, M. Aziz
In this paper, a high resolution perpendicular contact recording test system has been made and used for studying signal and noise properties of a new proposed recording scheme, Shingled Magnetic Recording (SMR). The tester uses modern tunnel magneto-resistive (TMR) head as a sensor and single write pole to write sequence of data on the sample. The write and read processes operate at very low scan rate in physical contact with the sample. Thus, the maximum performance, signal and noise characteristics can be obtained without the effects of spacing loss, thermal asperities and flying height uncertainties. The tester includes standard magnetic media test parameters such as saturation, roll-off curves, transition noise and two-dimensional (2D) readback image. It was found that the roll-off curves follow the same trend found in conventional recording except at low linear density, where shingled recording gave slightly higher voltage amplitudes compared to conventional recording attributed to constructive, inter-track interference. Transition noise was measured using time domain techniques. The measurements indicated a strong noise signal on shingled recording and its peak was around the D50 point of the medium.
{"title":"Experimental studies of shingled recording using contact recording test system","authors":"K. Chooruang, M. Aziz","doi":"10.1109/ECTICON.2013.6559498","DOIUrl":"https://doi.org/10.1109/ECTICON.2013.6559498","url":null,"abstract":"In this paper, a high resolution perpendicular contact recording test system has been made and used for studying signal and noise properties of a new proposed recording scheme, Shingled Magnetic Recording (SMR). The tester uses modern tunnel magneto-resistive (TMR) head as a sensor and single write pole to write sequence of data on the sample. The write and read processes operate at very low scan rate in physical contact with the sample. Thus, the maximum performance, signal and noise characteristics can be obtained without the effects of spacing loss, thermal asperities and flying height uncertainties. The tester includes standard magnetic media test parameters such as saturation, roll-off curves, transition noise and two-dimensional (2D) readback image. It was found that the roll-off curves follow the same trend found in conventional recording except at low linear density, where shingled recording gave slightly higher voltage amplitudes compared to conventional recording attributed to constructive, inter-track interference. Transition noise was measured using time domain techniques. The measurements indicated a strong noise signal on shingled recording and its peak was around the D50 point of the medium.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132460718","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 : 2013-05-15DOI: 10.1109/ECTICON.2013.6559654
Surapong Seela-Or, Kittipong Tonmitr, A. Kaewrawang, A. Suksri
This paper presents the dielectric barrier breakdown test in transformer oil which is between electrodes in point - point and point - plate types. Polyvinyl Chloride hard (PVC), Ply methyl meth cry late (PMMA), glass, and wood were used as solid insulator with thickness of 2.0 mm. The results of the experiment showed that, in the case of point-point electrode type, PVC can withstand the breakdown voltage up to 205 kV. Whereas, point-plate electrode type, it can withstand the breakdown voltage up to 183.5 kV due to different electrode types. Consequently, the voltage and electric field of these two types are different. The insulator materials - PMMA, glass, wood, transformer oil and air can withstand lower breakdown voltage, respectively. This experiment leads to design the solid insulator which is effectively capable to use in high voltage equipments with the transformer oil as insulation.
{"title":"Solid investigation in oil barrier dielectric under non-uniform electric field","authors":"Surapong Seela-Or, Kittipong Tonmitr, A. Kaewrawang, A. Suksri","doi":"10.1109/ECTICON.2013.6559654","DOIUrl":"https://doi.org/10.1109/ECTICON.2013.6559654","url":null,"abstract":"This paper presents the dielectric barrier breakdown test in transformer oil which is between electrodes in point - point and point - plate types. Polyvinyl Chloride hard (PVC), Ply methyl meth cry late (PMMA), glass, and wood were used as solid insulator with thickness of 2.0 mm. The results of the experiment showed that, in the case of point-point electrode type, PVC can withstand the breakdown voltage up to 205 kV. Whereas, point-plate electrode type, it can withstand the breakdown voltage up to 183.5 kV due to different electrode types. Consequently, the voltage and electric field of these two types are different. The insulator materials - PMMA, glass, wood, transformer oil and air can withstand lower breakdown voltage, respectively. This experiment leads to design the solid insulator which is effectively capable to use in high voltage equipments with the transformer oil as insulation.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130839746","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 : 2013-05-15DOI: 10.1109/ECTICON.2013.6559604
Patcharapol Kas-udom, W. Santipach
We propose two bit allocations for a powerline OFDM channel to minimize a total transmission energy. The first is the optimal bit allocation derived for a deterministic channel model. The optimal number of bits allotted for each subchannel depends on channel gains, required data rate and transmission duration. For the second allocation, an equal number of bits is transmitted on a subchannel whose ratio between a noise power and squared channel gain is less than certain threshold. This on-off threshold-based bit allocation is also analyzed for a random channel model for which the closed-form expression for the total energy consumption is obtained in a large system limit. Numerical examples show that the optimal bit allocation could results in 83% reduction in transmission energy, compared to a uniform bit allocation and that the on-off allocation performs close to the optimum when a transmission time is short.
{"title":"Minimum-energy bit allocation over powerline OFDM channels","authors":"Patcharapol Kas-udom, W. Santipach","doi":"10.1109/ECTICON.2013.6559604","DOIUrl":"https://doi.org/10.1109/ECTICON.2013.6559604","url":null,"abstract":"We propose two bit allocations for a powerline OFDM channel to minimize a total transmission energy. The first is the optimal bit allocation derived for a deterministic channel model. The optimal number of bits allotted for each subchannel depends on channel gains, required data rate and transmission duration. For the second allocation, an equal number of bits is transmitted on a subchannel whose ratio between a noise power and squared channel gain is less than certain threshold. This on-off threshold-based bit allocation is also analyzed for a random channel model for which the closed-form expression for the total energy consumption is obtained in a large system limit. Numerical examples show that the optimal bit allocation could results in 83% reduction in transmission energy, compared to a uniform bit allocation and that the on-off allocation performs close to the optimum when a transmission time is short.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128486967","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 : 2013-05-15DOI: 10.1109/ECTICON.2013.6559640
Supot Hornamchai, M. Ekpanyapong, P. Israsena
A blind source separation system is designed for digital hearing aids which required real-time operating and inexpensive resources. In addition, we implement our BSS system on a digital signal processor (DSP) which can be used in digital hearing aid devices. This will enable a better sound quality in which different sound sources can be amplified separately based on the user requirement. We measure the performance of the system by noise reduce rate; the performance of simulation and real-time implementation is 1.4081 and 1.2137 db respectively. The results illustrate that our BSS system is suitable to apply for digital hearing aids application and can be operated in real-time.
{"title":"The design of a blind source separation system for digital hearing aids","authors":"Supot Hornamchai, M. Ekpanyapong, P. Israsena","doi":"10.1109/ECTICON.2013.6559640","DOIUrl":"https://doi.org/10.1109/ECTICON.2013.6559640","url":null,"abstract":"A blind source separation system is designed for digital hearing aids which required real-time operating and inexpensive resources. In addition, we implement our BSS system on a digital signal processor (DSP) which can be used in digital hearing aid devices. This will enable a better sound quality in which different sound sources can be amplified separately based on the user requirement. We measure the performance of the system by noise reduce rate; the performance of simulation and real-time implementation is 1.4081 and 1.2137 db respectively. The results illustrate that our BSS system is suitable to apply for digital hearing aids application and can be operated in real-time.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131305725","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 : 2013-05-15DOI: 10.37936/ECTI-CIT.201482.54398
K. Sawada, Seiichi Shin
This paper considers an output feedback control for quantized feedback systems. Our controller provides high accuracy control performance for embedded devices with low-resolution ADIDA converters. For a certain system, we provide closed form and numerical solutions for the synthesis problem. The synthesis problem we address is the simultaneous synthesis of the nominal controller and the delta-sigma modulator (where the modulators are called the dynamic quantizers). Our approach is based on the invariant set analysis and the LMI technique. First, this paper proposes a synthesis condition that is recast as a set of matrix inequality condition. The condition reduces to a tractable numerical optimization problem. Second, a closed form solution of an optimal controller for the quantized feedback system is clarified within the invariant set framework. Finally, we discuss the controller synthesis conditions which are characterized by the transmission zero property.
{"title":"On the output feedback control of discrete-valued input systems","authors":"K. Sawada, Seiichi Shin","doi":"10.37936/ECTI-CIT.201482.54398","DOIUrl":"https://doi.org/10.37936/ECTI-CIT.201482.54398","url":null,"abstract":"This paper considers an output feedback control for quantized feedback systems. Our controller provides high accuracy control performance for embedded devices with low-resolution ADIDA converters. For a certain system, we provide closed form and numerical solutions for the synthesis problem. The synthesis problem we address is the simultaneous synthesis of the nominal controller and the delta-sigma modulator (where the modulators are called the dynamic quantizers). Our approach is based on the invariant set analysis and the LMI technique. First, this paper proposes a synthesis condition that is recast as a set of matrix inequality condition. The condition reduces to a tractable numerical optimization problem. Second, a closed form solution of an optimal controller for the quantized feedback system is clarified within the invariant set framework. Finally, we discuss the controller synthesis conditions which are characterized by the transmission zero property.","PeriodicalId":273802,"journal":{"name":"2013 10th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131183996","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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