Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249144
W. Regula, Jordan M. L. Gilbert, Waseem Sheikh
Frequency modulation (FM) is used worldwide for high-fidelity broadcast radio communication. This paper presents a MATLAB implementation of a stereophonic FM transmitter and receiver. Simulations are performed to measure the performance of the stereophonic FM receiver in the presence of additive white Gaussian noise (AWGN). A stereophonic FM signal with pre-detection SNR values from 0 to 60 dB, in increments of 10 dB, is demodulated using a discriminator. Post-detection SNR values are determined, and performance characteristics are examined for above and below threshold modes of FM operation. The simulations show that the receiver reliably demodulates the message signal for pre-detection SNR values greater than 30 dB. Degradation of the signal occurs at and below 20 dB with a complete loss of signal at 0 dB (below threshold mode). A 15 dB post-detection SNR gain occurs at 60 dB pre-detection SNR.
{"title":"Stereophonic Frequency Modulation using MATLAB: An Undergraduate Research Project","authors":"W. Regula, Jordan M. L. Gilbert, Waseem Sheikh","doi":"10.1109/IETC47856.2020.9249144","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249144","url":null,"abstract":"Frequency modulation (FM) is used worldwide for high-fidelity broadcast radio communication. This paper presents a MATLAB implementation of a stereophonic FM transmitter and receiver. Simulations are performed to measure the performance of the stereophonic FM receiver in the presence of additive white Gaussian noise (AWGN). A stereophonic FM signal with pre-detection SNR values from 0 to 60 dB, in increments of 10 dB, is demodulated using a discriminator. Post-detection SNR values are determined, and performance characteristics are examined for above and below threshold modes of FM operation. The simulations show that the receiver reliably demodulates the message signal for pre-detection SNR values greater than 30 dB. Degradation of the signal occurs at and below 20 dB with a complete loss of signal at 0 dB (below threshold mode). A 15 dB post-detection SNR gain occurs at 60 dB pre-detection SNR.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115008730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249202
Jonathan Devadason, P. Moses
In this paper, small signal stability of a simple microgrid operating in islanded mode is analyzed by computing eigen value trajectories when the system is subjected to different parametric changes. Detailed mathematical modeling of a synchronous machine supplying a constant impedance load through a series compensated line is presented. The system is equipped with a speed governor and an Automatic Voltage Regulator (AVR) with a PI controller. Eigen value trajectories of the linearized system are computed by considering parametric changes in the load, degree of compensation, exciter gain and time constant, proportional and integral gains of the PI controller of the AVR and the droop of the speed governor. From the results obtained, it was observed that the system is subjected to oscillatory instability when the AVR parameters and the speed governor droop exceeded certain limits. Also, the system was completely stable when the load and the degree of compensation was varied in a wide range. These results indicate the importance of selection of proper values for parameters of microgrids operating in islanded mode.
{"title":"Small Signal Stability of a Series Compensated Microgrid Operating in Islanded Mode","authors":"Jonathan Devadason, P. Moses","doi":"10.1109/IETC47856.2020.9249202","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249202","url":null,"abstract":"In this paper, small signal stability of a simple microgrid operating in islanded mode is analyzed by computing eigen value trajectories when the system is subjected to different parametric changes. Detailed mathematical modeling of a synchronous machine supplying a constant impedance load through a series compensated line is presented. The system is equipped with a speed governor and an Automatic Voltage Regulator (AVR) with a PI controller. Eigen value trajectories of the linearized system are computed by considering parametric changes in the load, degree of compensation, exciter gain and time constant, proportional and integral gains of the PI controller of the AVR and the droop of the speed governor. From the results obtained, it was observed that the system is subjected to oscillatory instability when the AVR parameters and the speed governor droop exceeded certain limits. Also, the system was completely stable when the load and the degree of compensation was varied in a wide range. These results indicate the importance of selection of proper values for parameters of microgrids operating in islanded mode.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132983113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249174
Kaveen Liyanage, Bradley M. Whitaker
Deep learning methods achieve very high classification accuracies in many tasks, including satellite image classification. However, these methods lack the transparency and simplicity of other classification algorithms. Sparse coding has emerged as an effective tool in classifying images, and provides the user with an efficient algorithm that easily relates the classification output to the original input feature space. In this work, we explore the viability and the effectiveness of a popular sparse coding algorithm, label-consistent k-means singular value decomposition (LC-KSVD), in classifying images from the satellite data set Sat-4. This paper provides a framework for using feature extraction, sparse coding, dictionary learning, and classifier training on the Sat-4 dataset, achieving a 94.5 % accuracy.
{"title":"Satellite Image Classification Using LC-KSVD Sparse Coding","authors":"Kaveen Liyanage, Bradley M. Whitaker","doi":"10.1109/IETC47856.2020.9249174","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249174","url":null,"abstract":"Deep learning methods achieve very high classification accuracies in many tasks, including satellite image classification. However, these methods lack the transparency and simplicity of other classification algorithms. Sparse coding has emerged as an effective tool in classifying images, and provides the user with an efficient algorithm that easily relates the classification output to the original input feature space. In this work, we explore the viability and the effectiveness of a popular sparse coding algorithm, label-consistent k-means singular value decomposition (LC-KSVD), in classifying images from the satellite data set Sat-4. This paper provides a framework for using feature extraction, sparse coding, dictionary learning, and classifier training on the Sat-4 dataset, achieving a 94.5 % accuracy.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133208970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249064
Patrick Spackman, Ivann Velasco, S. Schultz
Fiber Bragg grating sensors are configured to survive behind body armor during a ballistic impact. The keys that enable the fiber Bragg grating to survive the impact are allowing the optical fiber to slip, using draw tower gratings, using Ormocer as the optical fiber coating, and embedding the optical fiber in a silicone mat. The fiber Bragg grating sensor was tested in ballistic impact with a velocity of 430 m/s.
{"title":"Implementation and Survivability of Fiber Optic Sensing in Body Armor","authors":"Patrick Spackman, Ivann Velasco, S. Schultz","doi":"10.1109/IETC47856.2020.9249064","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249064","url":null,"abstract":"Fiber Bragg grating sensors are configured to survive behind body armor during a ballistic impact. The keys that enable the fiber Bragg grating to survive the impact are allowing the optical fiber to slip, using draw tower gratings, using Ormocer as the optical fiber coating, and embedding the optical fiber in a silicone mat. The fiber Bragg grating sensor was tested in ballistic impact with a velocity of 430 m/s.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123832272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249155
W. Guthrie, Elizabeth D. S. Smith, R. Stevens, T. Emery
A relatively new and increasingly popular method of urban pavement construction involves the application of cement slurry as an additive to soil and/or aggregates to improve the engineering properties of these materials. The purpose of this research was to identify and document best practices related to cement slurry application with ready-mixed concrete trucks as utilized on urban pavement construction projects. The methodology for this research involved field visits to pavement construction sites in northern Utah where active cement slurry applications could be observed. The results of this work provide valuable guidance that is expected to accelerate training of both drivers and construction workers who are involved in cement slurry projects.
{"title":"Cement Slurry Application Using a Ready-Mixed Concrete Truck: Best Practices for Urban Pavement Construction","authors":"W. Guthrie, Elizabeth D. S. Smith, R. Stevens, T. Emery","doi":"10.1109/IETC47856.2020.9249155","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249155","url":null,"abstract":"A relatively new and increasingly popular method of urban pavement construction involves the application of cement slurry as an additive to soil and/or aggregates to improve the engineering properties of these materials. The purpose of this research was to identify and document best practices related to cement slurry application with ready-mixed concrete trucks as utilized on urban pavement construction projects. The methodology for this research involved field visits to pavement construction sites in northern Utah where active cement slurry applications could be observed. The results of this work provide valuable guidance that is expected to accelerate training of both drivers and construction workers who are involved in cement slurry projects.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130331009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249162
H. Nieto-Chaupis
It is well-known that Nanomedicine will use all those available techniques of Nanotechnology to alleviate and surpass critic scenarios of diseases by the which current Medicine might be limited. In this paper, we explore possible scenarios of nano cargo delivering nanoparticles aimed to reach a cell or tissue. The theory of Quantum Mechanics to estimate the probabilities of releasing and arriving of nanoparticles to their target. The simulations have shown that electrical interactions is a noise that minimizes the central role of nanoparticles, and might cause the fail of an event of Targeting Drug Delivery (TDD in short), for example.
{"title":"Quantum Theory of Molecular Communications in Nanomedicine","authors":"H. Nieto-Chaupis","doi":"10.1109/IETC47856.2020.9249162","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249162","url":null,"abstract":"It is well-known that Nanomedicine will use all those available techniques of Nanotechnology to alleviate and surpass critic scenarios of diseases by the which current Medicine might be limited. In this paper, we explore possible scenarios of nano cargo delivering nanoparticles aimed to reach a cell or tissue. The theory of Quantum Mechanics to estimate the probabilities of releasing and arriving of nanoparticles to their target. The simulations have shown that electrical interactions is a noise that minimizes the central role of nanoparticles, and might cause the fail of an event of Targeting Drug Delivery (TDD in short), for example.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129496633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249156
M. Foss, Yucheng Liu
The modern engineering profession is dynamic, filled with uncertainty, and requires a technical background as well as interpersonal skills. The demands placed on modern engineers are to navigate and act upon competing priorities set by clients, regulating bodies, environmental groups, and the public at large to solve the problems of modern society. For engineering students to be prepared for the challenges they will face in their careers, they need to gain experience working in a dynamic environment to solve projects and problems that diverge from the theoretical realm and enter a practical landscape similar to what they will encounter in industry. One way is with an on-campus project-based learning (PBL) center. A PBL Center uses a pedagogical strategy where student learning centers around projects under the guidance of faculty mentors. The PBL Center also functions to allow industry and community partners to engage with faculty and student interns. The Concept Center at Weber State University is modeled after PBL pedagogy and functions to connect student interns employed at the center with sponsored projects. This paper discusses the application of PBL in the Concept Center to achieve a double mission of supporting industry and providing opportunities for students to gain experience in technology. A summary of intrinsic benefits is presented and lessons learned in the operation and management of the Concept Center.
{"title":"Project-Based Learning (PBL) Center to Bridge Students with Technology","authors":"M. Foss, Yucheng Liu","doi":"10.1109/IETC47856.2020.9249156","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249156","url":null,"abstract":"The modern engineering profession is dynamic, filled with uncertainty, and requires a technical background as well as interpersonal skills. The demands placed on modern engineers are to navigate and act upon competing priorities set by clients, regulating bodies, environmental groups, and the public at large to solve the problems of modern society. For engineering students to be prepared for the challenges they will face in their careers, they need to gain experience working in a dynamic environment to solve projects and problems that diverge from the theoretical realm and enter a practical landscape similar to what they will encounter in industry. One way is with an on-campus project-based learning (PBL) center. A PBL Center uses a pedagogical strategy where student learning centers around projects under the guidance of faculty mentors. The PBL Center also functions to allow industry and community partners to engage with faculty and student interns. The Concept Center at Weber State University is modeled after PBL pedagogy and functions to connect student interns employed at the center with sponsored projects. This paper discusses the application of PBL in the Concept Center to achieve a double mission of supporting industry and providing opportunities for students to gain experience in technology. A summary of intrinsic benefits is presented and lessons learned in the operation and management of the Concept Center.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122700956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249215
Waseem Sheikh, Nadeem Sheikh
Around 466 million people worldwide (over 5% of the world's population) have disabling hearing loss, and out of these 34 million are children. Estimates suggest that by 2050, over 900 million people worldwide will have disabling hearing loss. The annual global cost of unaddressed hearing loss amounts to US$ 750 billion. Early detection of hearing loss can reduce its impact on an individual's life in addition to saving a huge cost. This paper, the last one in a series of three papers, presents the class inheritance architecture of an open-source application framework for hearing impairment diagnosis. The framework is built using the Model-View-ViewModel (MVVM) pattern which separates the development of graphical user interface (GUI) from the development of business and back-end logic. Some of the benefits of the MVVM pattern include reusable components, independent development of GUI and business or back-end logic, flexibility to modify GUI without having to change business or back-end logic, ease of unit testing, and reduced maintenance overhead. The proposed framework along with the open-source code makes it possible to easily extend the application functionality thus enabling other researchers and practitioners to develop their own versions of hearing loss diagnosis applications. The proposed software was evaluated by an otolaryngologist and found to be very beneficial in assisting a clinician to reach a hearing impairment diagnosis conclusion more methodically, swiftly and accurately.
{"title":"A Model-View-ViewModel (MVVM) Application Framework for Hearing Impairment Diagnosis - Class Inheritance Architecture","authors":"Waseem Sheikh, Nadeem Sheikh","doi":"10.1109/IETC47856.2020.9249215","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249215","url":null,"abstract":"Around 466 million people worldwide (over 5% of the world's population) have disabling hearing loss, and out of these 34 million are children. Estimates suggest that by 2050, over 900 million people worldwide will have disabling hearing loss. The annual global cost of unaddressed hearing loss amounts to US$ 750 billion. Early detection of hearing loss can reduce its impact on an individual's life in addition to saving a huge cost. This paper, the last one in a series of three papers, presents the class inheritance architecture of an open-source application framework for hearing impairment diagnosis. The framework is built using the Model-View-ViewModel (MVVM) pattern which separates the development of graphical user interface (GUI) from the development of business and back-end logic. Some of the benefits of the MVVM pattern include reusable components, independent development of GUI and business or back-end logic, flexibility to modify GUI without having to change business or back-end logic, ease of unit testing, and reduced maintenance overhead. The proposed framework along with the open-source code makes it possible to easily extend the application functionality thus enabling other researchers and practitioners to develop their own versions of hearing loss diagnosis applications. The proposed software was evaluated by an otolaryngologist and found to be very beneficial in assisting a clinician to reach a hearing impairment diagnosis conclusion more methodically, swiftly and accurately.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117126863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249187
A. Seibi, Sean S. Tolman, Matt Jensen, Masood Amin, Amanda Bordelon, Tom Hales
Our university has recently launched a new engineering department in the College of Engineering and Technology to serve the community needs and satisfy the increasing demand for engineers in the region. The engineering department, consisting of four different programs: Mechanical, Electrical, Computer, and Civil, was established at the beginning of Fall 2018. The challenge faced by these programs was developing an up to date and comprehensive curriculum that encompasses a wide range of subjects to provide students with a substantial engaged learning experience through multidisciplinary and hands-on projects. To achieve this, the department has conducted an ambitious hiring process to attract new faculty possessing various working experiences that will enrich the development of capstone design guidelines. This paper, therefore, discusses the shared values and experiences between the faculty in developing capstone design courses in their respective schools and presents an opportunity for the newly established Engineering department to build on this diversity in order to establish sound capstone design guidelines suitable for the new programs.
{"title":"Toward the Development of Capstone Design Guidelines in Newly Established Engineering Programs","authors":"A. Seibi, Sean S. Tolman, Matt Jensen, Masood Amin, Amanda Bordelon, Tom Hales","doi":"10.1109/IETC47856.2020.9249187","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249187","url":null,"abstract":"Our university has recently launched a new engineering department in the College of Engineering and Technology to serve the community needs and satisfy the increasing demand for engineers in the region. The engineering department, consisting of four different programs: Mechanical, Electrical, Computer, and Civil, was established at the beginning of Fall 2018. The challenge faced by these programs was developing an up to date and comprehensive curriculum that encompasses a wide range of subjects to provide students with a substantial engaged learning experience through multidisciplinary and hands-on projects. To achieve this, the department has conducted an ambitious hiring process to attract new faculty possessing various working experiences that will enrich the development of capstone design guidelines. This paper, therefore, discusses the shared values and experiences between the faculty in developing capstone design courses in their respective schools and presents an opportunity for the newly established Engineering department to build on this diversity in order to establish sound capstone design guidelines suitable for the new programs.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131726495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-02DOI: 10.1109/IETC47856.2020.9249119
M. Lein, Rachel Blomquist, D. Demuth
Gravitational attraction between two objects in space is analytically determined from principles in calculus, then modeled using the python programming language on the GlowScript platform. Finally a context-rich problem is cast for use in the physics classroom or lab.
{"title":"Teaching Computation in Introductory Physics","authors":"M. Lein, Rachel Blomquist, D. Demuth","doi":"10.1109/IETC47856.2020.9249119","DOIUrl":"https://doi.org/10.1109/IETC47856.2020.9249119","url":null,"abstract":"Gravitational attraction between two objects in space is analytically determined from principles in calculus, then modeled using the python programming language on the GlowScript platform. Finally a context-rich problem is cast for use in the physics classroom or lab.","PeriodicalId":186446,"journal":{"name":"2020 Intermountain Engineering, Technology and Computing (IETC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131139008","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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