Pub Date : 1900-01-01DOI: 10.1109/ICEMIC.1999.871617
G. S. Mani
In this paper an attempt has been made on how some of the modern techniques of engineering design can be useful in modeling, prediction and analysis in EMI related aspects. The techniques covered in the paper include genetic algorithms, simulated annealing, artificial neural networks and fractal modeling. The paper is divided into two parts. The first part presents an outline of the methodologies of the techniques. The explanation has been kept brief. The second part discusses usage of the above techniques in certain specific areas related to EMI/EMC.
{"title":"Nontraditional methods for solving EMI problems","authors":"G. S. Mani","doi":"10.1109/ICEMIC.1999.871617","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871617","url":null,"abstract":"In this paper an attempt has been made on how some of the modern techniques of engineering design can be useful in modeling, prediction and analysis in EMI related aspects. The techniques covered in the paper include genetic algorithms, simulated annealing, artificial neural networks and fractal modeling. The paper is divided into two parts. The first part presents an outline of the methodologies of the techniques. The explanation has been kept brief. The second part discusses usage of the above techniques in certain specific areas related to EMI/EMC.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121902394","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 : 1900-01-01DOI: 10.1109/ICEMIC.1999.871656
A. K. Sen, R. Bera
This paper is based on broadband direct sequence spread spectrum (DS-SS) technology. Such a system will be very useful for information technology and networking for establishing the 'Global Village' in the 21st century. The use of millimeter waves allows very broadband multimedia communication required for very high speed information transfer with high reliability; such a system will be an attractive solution for defence and police wireless communications, cellular phones, the Internet and satellite communications due to its inherent EMI rejection capability. The above features will be implemented in a millimeter wave line of sight (LOS) link at 30 GHz with a multimedia communication facility to be operated between the Centenary Building of Calcutta University and Sisisr Mitra Bhaban of the Institute of Radiophysics and Electronics, over a line of sight distance of 1 km. The distance may also be increased up to 10 km if necessary, with a higher transmitter power at 30 GHz.
{"title":"EMI reduction in a broadband LOS link at millimeterwave by spread spectrum technique","authors":"A. K. Sen, R. Bera","doi":"10.1109/ICEMIC.1999.871656","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871656","url":null,"abstract":"This paper is based on broadband direct sequence spread spectrum (DS-SS) technology. Such a system will be very useful for information technology and networking for establishing the 'Global Village' in the 21st century. The use of millimeter waves allows very broadband multimedia communication required for very high speed information transfer with high reliability; such a system will be an attractive solution for defence and police wireless communications, cellular phones, the Internet and satellite communications due to its inherent EMI rejection capability. The above features will be implemented in a millimeter wave line of sight (LOS) link at 30 GHz with a multimedia communication facility to be operated between the Centenary Building of Calcutta University and Sisisr Mitra Bhaban of the Institute of Radiophysics and Electronics, over a line of sight distance of 1 km. The distance may also be increased up to 10 km if necessary, with a higher transmitter power at 30 GHz.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116824715","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 : 1900-01-01DOI: 10.1109/ICEMIC.1999.871663
J. Asbalter, S. Karunakaran, A. Subrahmmanyam
The phenomenon of electromagnetic interference (EMI) is well known. For the specific case of video displays the EMI control requires transparency in the visible spectrum. In the present paper, the EMI shielding properties of indium oxide (IO) thin films have been studied. These IO thin films of thickness ranging between 100-150 nm have been prepared on glass substrates by the reactive electron beam evaporation technique. The electrical and optical properties of these IO films have been studied by varying the substrate temperature. The films have a resistivity of the order of 1.0/spl times/10/sup -4/ ohm cm and an optical transparency of 85%. It is found that the EMI shielding efficiency (SE) of IO films (of 100 nm thickness) is very much comparable to that of the silver coated metal sheet in the measured frequency range 1 MHz to 800 MHz. In order to understand these results, preliminary analyses have been carried out by evaluating the conducting carrier density and the AC magnetic susceptibility measurements. The analyses clearly indicate the required properties of IO films for EMI applications.
{"title":"Properties of indium oxide thin films prepared by reactive electron beam evaporation technique for EMI control","authors":"J. Asbalter, S. Karunakaran, A. Subrahmmanyam","doi":"10.1109/ICEMIC.1999.871663","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871663","url":null,"abstract":"The phenomenon of electromagnetic interference (EMI) is well known. For the specific case of video displays the EMI control requires transparency in the visible spectrum. In the present paper, the EMI shielding properties of indium oxide (IO) thin films have been studied. These IO thin films of thickness ranging between 100-150 nm have been prepared on glass substrates by the reactive electron beam evaporation technique. The electrical and optical properties of these IO films have been studied by varying the substrate temperature. The films have a resistivity of the order of 1.0/spl times/10/sup -4/ ohm cm and an optical transparency of 85%. It is found that the EMI shielding efficiency (SE) of IO films (of 100 nm thickness) is very much comparable to that of the silver coated metal sheet in the measured frequency range 1 MHz to 800 MHz. In order to understand these results, preliminary analyses have been carried out by evaluating the conducting carrier density and the AC magnetic susceptibility measurements. The analyses clearly indicate the required properties of IO films for EMI applications.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125722101","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 : 1900-01-01DOI: 10.1109/ICEMIC.1999.871675
O. Hartal
EMC design methodology for electronic equipment is examined from the cost-effective aspect. Different engineering solutions are evaluated in light of their cost versus their efficiency in providing EMI suppression for emission and immunity. As cost is a critical factor in the consumer market, the dB per dollar (dB/$) value of an EMI control must be taken into consideration in the EMC design methodology. A number of practical examples are given as an illustration.
{"title":"Cost considerations in EMC design methodology","authors":"O. Hartal","doi":"10.1109/ICEMIC.1999.871675","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871675","url":null,"abstract":"EMC design methodology for electronic equipment is examined from the cost-effective aspect. Different engineering solutions are evaluated in light of their cost versus their efficiency in providing EMI suppression for emission and immunity. As cost is a critical factor in the consumer market, the dB per dollar (dB/$) value of an EMI control must be taken into consideration in the EMC design methodology. A number of practical examples are given as an illustration.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122015875","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 : 1900-01-01DOI: 10.1109/ICEMIC.1999.871662
M. Sudheer, M. Gunasekaran
Metal oxide varistors (MOV) are popularly used to protect offline electronic equipment against power line transients. The offline switched mode power supplies (SMPS) use power line filters and MOVs in the front-end. The power line filter is used to reduce the conducted noise emission into the power line and the MOVs connected before this line filter and the MOVs connected before this line filter to clamp line transients to safer levels thereby protecting the SMPS. Because of the presence of 'X' capacitors at the input of line filter the MOV clamping voltage is increased. This paper presents one such case and gives theoretical and experimental results. An approximate method to predetermine the magnitude of such clamping voltages is also presented.
金属氧化物压敏电阻(MOV)广泛用于保护离线电子设备免受电力线瞬变的影响。SMPS (offline switched mode power supply)前端采用电源线滤波器和MOVs。电力线滤波器用于减少传导噪声发射到电力线和连接在该线路滤波器之前的MOVs，以及连接在该线路滤波器之前的MOVs，以将线路瞬态箝位到更安全的水平，从而保护SMPS。由于在线滤波器的输入端存在“X”电容，MOV箝位电压增加。本文给出了一个实例，并给出了理论和实验结果。还提出了一种近似的方法来预先确定这种箝位电压的大小。
{"title":"Effect of power line filter on MOV clamping voltage","authors":"M. Sudheer, M. Gunasekaran","doi":"10.1109/ICEMIC.1999.871662","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871662","url":null,"abstract":"Metal oxide varistors (MOV) are popularly used to protect offline electronic equipment against power line transients. The offline switched mode power supplies (SMPS) use power line filters and MOVs in the front-end. The power line filter is used to reduce the conducted noise emission into the power line and the MOVs connected before this line filter and the MOVs connected before this line filter to clamp line transients to safer levels thereby protecting the SMPS. Because of the presence of 'X' capacitors at the input of line filter the MOV clamping voltage is increased. This paper presents one such case and gives theoretical and experimental results. An approximate method to predetermine the magnitude of such clamping voltages is also presented.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125365147","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 : 1900-01-01DOI: 10.1109/ICEMIC.1999.871595
D. C. Pande
Ultra Wide Band (UWB) systems have received considerable interest in recent years as a system that might offer technical improvements in conventional electronic systems. Defence applications of UWB signals include communication radar, electronic intelligence and electronic warfare. Defence radio and radar systems will require signals free from interception exploitation and interference. The electronic warfare sequence of measures, countermeasures, counter-countermeasures leads to use of spread spectrum (SS), wide band (WB) and ultra wide band (UWB) signal waveforms. Availability of UWB systems with their subtle characteristics enhances the complexity of achieving electromagnetic compatibility (EMC). For efficient application, UWB systems require special EMC considerations to achieve intra and inter system EMC. In this paper an attempt has been made to highlight electromagnetic interference (EMI) and compatibility aspects pertaining to UWB systems. The electromagnetic environment and its impact in intra and inter system EMI problems, their control and required modifications of the existing standards are critically analyzed and discussed.
{"title":"Ultra wide band (UWB) systems and their implications to electromagnetic environment","authors":"D. C. Pande","doi":"10.1109/ICEMIC.1999.871595","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871595","url":null,"abstract":"Ultra Wide Band (UWB) systems have received considerable interest in recent years as a system that might offer technical improvements in conventional electronic systems. Defence applications of UWB signals include communication radar, electronic intelligence and electronic warfare. Defence radio and radar systems will require signals free from interception exploitation and interference. The electronic warfare sequence of measures, countermeasures, counter-countermeasures leads to use of spread spectrum (SS), wide band (WB) and ultra wide band (UWB) signal waveforms. Availability of UWB systems with their subtle characteristics enhances the complexity of achieving electromagnetic compatibility (EMC). For efficient application, UWB systems require special EMC considerations to achieve intra and inter system EMC. In this paper an attempt has been made to highlight electromagnetic interference (EMI) and compatibility aspects pertaining to UWB systems. The electromagnetic environment and its impact in intra and inter system EMI problems, their control and required modifications of the existing standards are critically analyzed and discussed.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127052817","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 : 1900-01-01DOI: 10.1109/ICEMIC.1999.871619
G. Deb
This paper summarises the strategy of EMC education in India and abroad. A formal EMC educational course basically includes a broad comprehensive introduction to electromagnetic interference (EMI) problems and their hardening and analysis techniques, computational electromagnetics, methods of EMI measurement and various standards and specifications used in the international levels, as well as instrumentation and case histories of the EMC problems. This is also aimed at training the working engineers in industries, as engineers are keenly interested in EMC because of the competitive nature of today's market. The educational course is designed by the expert teaching staff to provide proper motivation and realism and practical aspects of the EMI situations. The course is divided into two parts. To begin with, the education course may consist of a lecture segment covering the essential topics like EMC aspects, EMC requirements for electronic systems, signal spectra, crosstalk, shielding, electromagnetics etc., and is followed by practical design of various live electromagnetic problems experienced in information technology products and processes, measurements, seminars both by students and by experts from the industries, R&D houses and visits to EMC design centres in the second part. The paper addresses the syllabus of this integrated EMC course which is taught in undergraduate level of the Universities/Institutions. The paper emphasises the importance of nonformal EMC education to produce skilled manpower to look after the EMC design and measurement techniques in electronic industries.
{"title":"Importance of EMC education","authors":"G. Deb","doi":"10.1109/ICEMIC.1999.871619","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871619","url":null,"abstract":"This paper summarises the strategy of EMC education in India and abroad. A formal EMC educational course basically includes a broad comprehensive introduction to electromagnetic interference (EMI) problems and their hardening and analysis techniques, computational electromagnetics, methods of EMI measurement and various standards and specifications used in the international levels, as well as instrumentation and case histories of the EMC problems. This is also aimed at training the working engineers in industries, as engineers are keenly interested in EMC because of the competitive nature of today's market. The educational course is designed by the expert teaching staff to provide proper motivation and realism and practical aspects of the EMI situations. The course is divided into two parts. To begin with, the education course may consist of a lecture segment covering the essential topics like EMC aspects, EMC requirements for electronic systems, signal spectra, crosstalk, shielding, electromagnetics etc., and is followed by practical design of various live electromagnetic problems experienced in information technology products and processes, measurements, seminars both by students and by experts from the industries, R&D houses and visits to EMC design centres in the second part. The paper addresses the syllabus of this integrated EMC course which is taught in undergraduate level of the Universities/Institutions. The paper emphasises the importance of nonformal EMC education to produce skilled manpower to look after the EMC design and measurement techniques in electronic industries.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128984058","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 : 1900-01-01DOI: 10.1109/ICEMIC.1999.871586
A. Imayakumar, K. Udayakumar, A. Devarpiran
The automotive electrical system of a fighting vehicle uses a 28 V regulated DC bus for power distribution and for catering for the various loads fitted on board the vehicle. The vehicle uses harnessing schemes that adopt both single wire return and two wire methods for power distribution within the vehicle. The present paper deals with various EMI and EMC problems encountered and methods adopted to reduce the same to meet MIL 461C standards. The rotary slip joint is adopted to supply power from the stationary chassis to the rotating top which is unique for a given vehicle. The paper also discusses the grounding philosophy adopted in the fighting vehicles for best performance in a harsh environment.
{"title":"Automotive power supply distribution and grounding techniques adopted for fighting vehicles","authors":"A. Imayakumar, K. Udayakumar, A. Devarpiran","doi":"10.1109/ICEMIC.1999.871586","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871586","url":null,"abstract":"The automotive electrical system of a fighting vehicle uses a 28 V regulated DC bus for power distribution and for catering for the various loads fitted on board the vehicle. The vehicle uses harnessing schemes that adopt both single wire return and two wire methods for power distribution within the vehicle. The present paper deals with various EMI and EMC problems encountered and methods adopted to reduce the same to meet MIL 461C standards. The rotary slip joint is adopted to supply power from the stationary chassis to the rotating top which is unique for a given vehicle. The paper also discusses the grounding philosophy adopted in the fighting vehicles for best performance in a harsh environment.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129580635","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 : 1900-01-01DOI: 10.1109/ICEMIC.1999.871629
V. Dhar
One of the basic controls of electromagnetic interference (EMI) is a power line filter. The performance of a filter depends on various factors, such as, voltage and current ratings, environmental conditions, mechanical considerations and the like. Filter performance is required to be evaluated in full load conditions rather than no load conditions, since the former can predict the actual loss levels, which the latter cannot. Another factor, which dominates filter performance, is the type of load to which the filter will be exposed in real practice. In this paper an attempt has been made to show that different types of load may result in different loss levels for the filter over the desired frequency spectrum. Comparison of loss levels obtained during the test and also during actual use has also been dealt with.
{"title":"Performance evaluation of power line filter. A case study","authors":"V. Dhar","doi":"10.1109/ICEMIC.1999.871629","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871629","url":null,"abstract":"One of the basic controls of electromagnetic interference (EMI) is a power line filter. The performance of a filter depends on various factors, such as, voltage and current ratings, environmental conditions, mechanical considerations and the like. Filter performance is required to be evaluated in full load conditions rather than no load conditions, since the former can predict the actual loss levels, which the latter cannot. Another factor, which dominates filter performance, is the type of load to which the filter will be exposed in real practice. In this paper an attempt has been made to show that different types of load may result in different loss levels for the filter over the desired frequency spectrum. Comparison of loss levels obtained during the test and also during actual use has also been dealt with.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128497279","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 : 1900-01-01DOI: 10.1109/ICEMIC.1999.871589
S. Rao, A. Sathyanarayanan, U. Nandwani
Diagnostic and clinical equipment is required for accurate measurement of patients, health monitoring and control. Hence, a modern hospital is always updating its diagnostic equipment from time to time as the technology advances. The new facilities are being installed in the existing places without ascertaining the possible EMI problems. The problem is acute, with ever increasing wireless communication networks in the form of cellullar phones, police networks and private communication networks where the EMI generated may cause the medical devices to malfunction or to indicate false readings. The European Union has drafted the requirements as a medical directive for equipment which is used for clinical and non-clinical purposes. The same requirement will be imposed on all equipment manufacturers and the users to safeguard the use of medical devices. In this paper the authors bring out the typical EMI sources encountered by the types of medical devices indicated above and possible prevention through testing of devices as per IEC/EN standards.
{"title":"EMI problems for medical devices","authors":"S. Rao, A. Sathyanarayanan, U. Nandwani","doi":"10.1109/ICEMIC.1999.871589","DOIUrl":"https://doi.org/10.1109/ICEMIC.1999.871589","url":null,"abstract":"Diagnostic and clinical equipment is required for accurate measurement of patients, health monitoring and control. Hence, a modern hospital is always updating its diagnostic equipment from time to time as the technology advances. The new facilities are being installed in the existing places without ascertaining the possible EMI problems. The problem is acute, with ever increasing wireless communication networks in the form of cellullar phones, police networks and private communication networks where the EMI generated may cause the medical devices to malfunction or to indicate false readings. The European Union has drafted the requirements as a medical directive for equipment which is used for clinical and non-clinical purposes. The same requirement will be imposed on all equipment manufacturers and the users to safeguard the use of medical devices. In this paper the authors bring out the typical EMI sources encountered by the types of medical devices indicated above and possible prevention through testing of devices as per IEC/EN standards.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121634719","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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