Pub Date : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863123
E. Aribas, M. S. Çelebi
This study investigates the bio-mechanics of one main artery model in a three dimensional analytical cylindrical generated geometry based on a real human artery. Structured geometry is a medium large (celiac) artery. Constant and sinus velocity profile is applied as an interpolated input. Non-Newtonian Carreau viscosity model and fluid-structure interaction (FSI) is applied numerically. Oscillating Shear Index (OSI), Time Averaged Wall Shear Stress Index (TAWSSI) and Relative Residence Time (RRE) as well as velocity, pressure and pressure are studied. As an example, stenosed areas can be studied with the help of the model. Then these values are compared and presented for their importance.
{"title":"Oscillating shear index, time averaged wall shear index, relative residence time analysis in 3D structured analytical artery","authors":"E. Aribas, M. S. Çelebi","doi":"10.1109/TIPTEKNO.2016.7863123","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863123","url":null,"abstract":"This study investigates the bio-mechanics of one main artery model in a three dimensional analytical cylindrical generated geometry based on a real human artery. Structured geometry is a medium large (celiac) artery. Constant and sinus velocity profile is applied as an interpolated input. Non-Newtonian Carreau viscosity model and fluid-structure interaction (FSI) is applied numerically. Oscillating Shear Index (OSI), Time Averaged Wall Shear Stress Index (TAWSSI) and Relative Residence Time (RRE) as well as velocity, pressure and pressure are studied. As an example, stenosed areas can be studied with the help of the model. Then these values are compared and presented for their importance.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121605185","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 : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863076
S. Kucuk, B. Gungor
In this paper, a new hybrid robot manipulator is proposed for medical purposes. This hybrid robot manipulator has been formed by combination of a serial and a parallel robot manipulator. The inboard joints of new hybrid robot consist of 3-DOF SCARA type robot manipulator that performs positioning of the end effector. The outboard joints of the new hybrid robot consist of Stewart platform parallel manipulator which is used for orientation of the end effector only. Afterwards, the inverse kinematics of this new hybrid robot manipulator is obtained by using DH method. A numerical example is also given in order to demonstrate the working of the model.
{"title":"Inverse kinematics solution of a new hybrid robot manipulator proposed for medical purposes","authors":"S. Kucuk, B. Gungor","doi":"10.1109/TIPTEKNO.2016.7863076","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863076","url":null,"abstract":"In this paper, a new hybrid robot manipulator is proposed for medical purposes. This hybrid robot manipulator has been formed by combination of a serial and a parallel robot manipulator. The inboard joints of new hybrid robot consist of 3-DOF SCARA type robot manipulator that performs positioning of the end effector. The outboard joints of the new hybrid robot consist of Stewart platform parallel manipulator which is used for orientation of the end effector only. Afterwards, the inverse kinematics of this new hybrid robot manipulator is obtained by using DH method. A numerical example is also given in order to demonstrate the working of the model.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126951610","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 : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863098
Faruk Aktas, Emre Kavuş, Yunus Kavuş
A patient monitoring system basically includes sensors and a microcontroller. The sensor devices that is capable of sensing many vital physiological and biological data such as body temperature, blood pressure and electrocardiogram (ECG), etc. from human body and sending them to the microcontroller using analog outputs. In this study, a real time infant monitoring system especially for hard of hearing parents, is developed. The proposed system works continuously in real time, monitoring vital physiological signals of an infant and generates alert (vibration and led blink) for abnormal situations. In alert case, both LCD screen and vibrating wristband which are attached to the body warns the parents. An Arduino Leonardo board has been used in system design which is attached by body temperature sensor, finger heartbeat detector and water sensor. The results show that physiological signals from the infant body can successfully and the all alarm condition function up properly.
{"title":"Real time infant health monitoring system for hard of hearing parents","authors":"Faruk Aktas, Emre Kavuş, Yunus Kavuş","doi":"10.1109/TIPTEKNO.2016.7863098","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863098","url":null,"abstract":"A patient monitoring system basically includes sensors and a microcontroller. The sensor devices that is capable of sensing many vital physiological and biological data such as body temperature, blood pressure and electrocardiogram (ECG), etc. from human body and sending them to the microcontroller using analog outputs. In this study, a real time infant monitoring system especially for hard of hearing parents, is developed. The proposed system works continuously in real time, monitoring vital physiological signals of an infant and generates alert (vibration and led blink) for abnormal situations. In alert case, both LCD screen and vibrating wristband which are attached to the body warns the parents. An Arduino Leonardo board has been used in system design which is attached by body temperature sensor, finger heartbeat detector and water sensor. The results show that physiological signals from the infant body can successfully and the all alarm condition function up properly.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132746666","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 : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863110
A. Narin, Y. Isler, M. Özer
Paroxysmal Atrial Fibrillation (PAF) is a very common heart disease caused by irregular impulses of atrial tissue in adult. Diagnosing in the early stages of this disorder is very important for the patients to stop the progression of the disease and to improve the life quality. In this study, it is aimed to predict the PAF event before the realization of the PAF which in 5 minutes for the PAF patients. 30-minute data used in the study were divided into 5-minute parts. Fast Fourier Transform of frequency domain measures of heart rate variability obtained easily and practically is used for each part. The statistical significances among segments and discriminating performances of k-Nearest Neighbors classifier were obtained for each segment using these measurements. Consequently, As a result of statistical analysis, it is shown that patients may be warned 12.5 minutes earlier than a PAF attack.
{"title":"Early prediction of Paroxysmal Atrial Fibrillation using frequency domain measures of heart rate variability","authors":"A. Narin, Y. Isler, M. Özer","doi":"10.1109/TIPTEKNO.2016.7863110","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863110","url":null,"abstract":"Paroxysmal Atrial Fibrillation (PAF) is a very common heart disease caused by irregular impulses of atrial tissue in adult. Diagnosing in the early stages of this disorder is very important for the patients to stop the progression of the disease and to improve the life quality. In this study, it is aimed to predict the PAF event before the realization of the PAF which in 5 minutes for the PAF patients. 30-minute data used in the study were divided into 5-minute parts. Fast Fourier Transform of frequency domain measures of heart rate variability obtained easily and practically is used for each part. The statistical significances among segments and discriminating performances of k-Nearest Neighbors classifier were obtained for each segment using these measurements. Consequently, As a result of statistical analysis, it is shown that patients may be warned 12.5 minutes earlier than a PAF attack.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"50 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132643577","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 : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863096
Mehmet Gümüşay, Fulya Gülbağça, S. Saygili, I. Aydemir, A. Kaya, M. Tuğlu
Chronic wound healing is an important problem especially in diabetic and the elderly which is needed development of the current treatment methods. Electromagnetic fields (EMF) has a significant impact on our body. These fields are being used for bone problems, cartilage regeneration, and pain removal for physiotherapy purposes. Lately, EMFs are often used in in vitro and in vivo assays. In this study, in vivo test results of the applied pulsed electromagnetic fields (PEMF) with our designed Helmholtz coil array system are given. The skin wound healing conducted in rats as an experimental model provides important information for evaluating the efficacy and mechanism of these kind of treatments. For this purpose, effectiveness of PEMF compared to control groups on experimental skin healing effect was examined macroscopically. Compared with the control groups a faster wound healing process was followed by PEMF application at 75 Hz frequency.
{"title":"Design of coils driven by pulsed electromagnetic field generator and the effect of wound healing in rats","authors":"Mehmet Gümüşay, Fulya Gülbağça, S. Saygili, I. Aydemir, A. Kaya, M. Tuğlu","doi":"10.1109/TIPTEKNO.2016.7863096","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863096","url":null,"abstract":"Chronic wound healing is an important problem especially in diabetic and the elderly which is needed development of the current treatment methods. Electromagnetic fields (EMF) has a significant impact on our body. These fields are being used for bone problems, cartilage regeneration, and pain removal for physiotherapy purposes. Lately, EMFs are often used in in vitro and in vivo assays. In this study, in vivo test results of the applied pulsed electromagnetic fields (PEMF) with our designed Helmholtz coil array system are given. The skin wound healing conducted in rats as an experimental model provides important information for evaluating the efficacy and mechanism of these kind of treatments. For this purpose, effectiveness of PEMF compared to control groups on experimental skin healing effect was examined macroscopically. Compared with the control groups a faster wound healing process was followed by PEMF application at 75 Hz frequency.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115190505","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 : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863079
Mahmut Ün, Manolya Ün, Faruk Sanberk Kızıltaş
This paper a novel analysis method for the evaluation of 2×n RLC circuit networks is introduced in the fractional order domain. The method entails the initial derivation of the transfer function and the equivalent impedances of the network based on the mesh current method. Corresponding theoretical formulations are obtained through the application of the band matrix inversion algorithm. In addition, we further investigate the effects of the system parameters on the transfer function and the impedance characteristics by either varying the number of the participating mesh (n) or the fractional order of the network. Finally, we perform and include the necessary mathematical analyses and numerical MATLAB simulations to demonstrate the validity of the study.
{"title":"Analysis of fractional-order 2×n RLC circuit network by mesh currents method","authors":"Mahmut Ün, Manolya Ün, Faruk Sanberk Kızıltaş","doi":"10.1109/TIPTEKNO.2016.7863079","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863079","url":null,"abstract":"This paper a novel analysis method for the evaluation of 2×n RLC circuit networks is introduced in the fractional order domain. The method entails the initial derivation of the transfer function and the equivalent impedances of the network based on the mesh current method. Corresponding theoretical formulations are obtained through the application of the band matrix inversion algorithm. In addition, we further investigate the effects of the system parameters on the transfer function and the impedance characteristics by either varying the number of the participating mesh (n) or the fractional order of the network. Finally, we perform and include the necessary mathematical analyses and numerical MATLAB simulations to demonstrate the validity of the study.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130006983","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 : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863139
I. Catalkaya, S. Kent
Low reflection microwave absorbers are important to improve anechoic chamber measurements. Beside used material, shape of the absorber is important as well for desired low reflection absorbers. Pyramidal and wedge type absorbers are well-known microwave absorbers used for anechoic chamber measurements. They are used as medical test absorbers for anechoic chamber measurements of medical devices as well. In this study, effect of being shape of the absorber concave or convex on reflection characteristic of the absorber is investigated. Reflection coefficient values of the convex-shaped absorber are compared with the reflection coefficient values of the concave and wedge-shaped absorbers and shown that convex-shaped absorber has better characteristics. Absorber structures are analyzed by using Periodic Moment Method (PMM). Reflection values of the absorber structures for the 2–8 GHz frequency band are compared for the normal incidence case. Their bistatic pattern comparisons are presented at 2 GHz. Analysis of an alternative absorber structure to the wedge type absorber is an important contribution of the study.
{"title":"Comparison of medical test absorbers","authors":"I. Catalkaya, S. Kent","doi":"10.1109/TIPTEKNO.2016.7863139","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863139","url":null,"abstract":"Low reflection microwave absorbers are important to improve anechoic chamber measurements. Beside used material, shape of the absorber is important as well for desired low reflection absorbers. Pyramidal and wedge type absorbers are well-known microwave absorbers used for anechoic chamber measurements. They are used as medical test absorbers for anechoic chamber measurements of medical devices as well. In this study, effect of being shape of the absorber concave or convex on reflection characteristic of the absorber is investigated. Reflection coefficient values of the convex-shaped absorber are compared with the reflection coefficient values of the concave and wedge-shaped absorbers and shown that convex-shaped absorber has better characteristics. Absorber structures are analyzed by using Periodic Moment Method (PMM). Reflection values of the absorber structures for the 2–8 GHz frequency band are compared for the normal incidence case. Their bistatic pattern comparisons are presented at 2 GHz. Analysis of an alternative absorber structure to the wedge type absorber is an important contribution of the study.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130775077","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 : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863120
Ş. Cinal, M. S. Çelik, I. Sahin, C. Tepe, Ilyas Eminoglu
In this study, Virtual Prosthetic Hand that controlled by single and dual channel sEMG (surface EMG) signals is presented. Virtual hand is designed by Blender 3D that is a powerful graphic modelling tool. Additionally, processing of raw EMG signal is explained with MATLAB. Python software language which has a large library was used for importing and evaluating of signals and for control algorithms. The Presented virtual hand has a modular structure and can be controlled by single and dual sEMG signals. Virtual hand opens, closes at constant speed and remains its position according to the processing signals.
{"title":"Design of prosthetic hand simulator","authors":"Ş. Cinal, M. S. Çelik, I. Sahin, C. Tepe, Ilyas Eminoglu","doi":"10.1109/TIPTEKNO.2016.7863120","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863120","url":null,"abstract":"In this study, Virtual Prosthetic Hand that controlled by single and dual channel sEMG (surface EMG) signals is presented. Virtual hand is designed by Blender 3D that is a powerful graphic modelling tool. Additionally, processing of raw EMG signal is explained with MATLAB. Python software language which has a large library was used for importing and evaluating of signals and for control algorithms. The Presented virtual hand has a modular structure and can be controlled by single and dual sEMG signals. Virtual hand opens, closes at constant speed and remains its position according to the processing signals.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114024374","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 : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863103
Salim Çinar, Nurettin Acır
Eye movements (saccade, blink and etc.) cause artefacts in Electroencephalogram recordings. The ocular artefact can distort the EEG signals. Removal of ocular artefact is important issue in EEG signal analysis. The main task of artefact removal algorithms is to obtain cleaned EEG without losing meaningful EEG signal. The main focus of this work is to remove ocular artefact automatically by using Independent Component Analysis and Chauvenet criterion. The method is tested on real dataset. Relative error and Correlation coefficient are used for the performance test. The performance of the proposed method was Relative error= 0.273±0.148, Correlation coefficients 0.943± 0.042 in the dataset. The results show that the porposed method effectively removes ocular artefacts in EEG.
{"title":"Automatic removal of ocular artefacts in EEG signal by using independent component analysis and Chauvenet criterion","authors":"Salim Çinar, Nurettin Acır","doi":"10.1109/TIPTEKNO.2016.7863103","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863103","url":null,"abstract":"Eye movements (saccade, blink and etc.) cause artefacts in Electroencephalogram recordings. The ocular artefact can distort the EEG signals. Removal of ocular artefact is important issue in EEG signal analysis. The main task of artefact removal algorithms is to obtain cleaned EEG without losing meaningful EEG signal. The main focus of this work is to remove ocular artefact automatically by using Independent Component Analysis and Chauvenet criterion. The method is tested on real dataset. Relative error and Correlation coefficient are used for the performance test. The performance of the proposed method was Relative error= 0.273±0.148, Correlation coefficients 0.943± 0.042 in the dataset. The results show that the porposed method effectively removes ocular artefacts in EEG.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128819685","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 : 2016-10-01DOI: 10.1109/TIPTEKNO.2016.7863115
O. Tan, Mehmet Akif Özçoban, S. Aydın
Obsessive Compulsive Disorders causes disruptive effect on brain oscillations. One of this disruptive effects is loss of synchronization. Global Field Synchronization indice that is calculated by Global Field Synchronization Method can detect degree of synchronization of EEG. According to analysis results, significantly difference was found between Global Field Synchronization Indice of OCD patients and healthy group in theta and delta frequency bands. For the purpose of testing success of GFS method in detecting OCD, GFS values of OCD patients and healthy group classified with Support Vector Machine method. In order to increase the performance of classification model, training and test data was selected by Cross Validation Method. Accuracy rate of classification results was found at 94.75 in delta band and 78.048 percent in theta band. The system can assist the physicians for diagnosing OCD. The classification results has shown that GFS is a successful method for to diagnose OCD.
{"title":"Classification of EEG synchronization values of obsessive compulsive disorders patients using Support Vector Machine Method","authors":"O. Tan, Mehmet Akif Özçoban, S. Aydın","doi":"10.1109/TIPTEKNO.2016.7863115","DOIUrl":"https://doi.org/10.1109/TIPTEKNO.2016.7863115","url":null,"abstract":"Obsessive Compulsive Disorders causes disruptive effect on brain oscillations. One of this disruptive effects is loss of synchronization. Global Field Synchronization indice that is calculated by Global Field Synchronization Method can detect degree of synchronization of EEG. According to analysis results, significantly difference was found between Global Field Synchronization Indice of OCD patients and healthy group in theta and delta frequency bands. For the purpose of testing success of GFS method in detecting OCD, GFS values of OCD patients and healthy group classified with Support Vector Machine method. In order to increase the performance of classification model, training and test data was selected by Cross Validation Method. Accuracy rate of classification results was found at 94.75 in delta band and 78.048 percent in theta band. The system can assist the physicians for diagnosing OCD. The classification results has shown that GFS is a successful method for to diagnose OCD.","PeriodicalId":431660,"journal":{"name":"2016 Medical Technologies National Congress (TIPTEKNO)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124134124","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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