Pub Date : 2015-06-18DOI: 10.1109/ECS.2015.7125037
N. Kumar, Mithilesh Kumar
This paper presents the design and implementation of a wide dual-band band pass filter using a new method. The proposed filter is developed with two stepped-impedance resonators. Both the ends of the two resonators are mutually coupled. Transmission zeros then appears on both sides of two pass bands and in the rejection bands. The two bands of the developed filter in the paper are centered at 1.22 GHz and 2 GHz. with bandwidths .72 GHz and .7 GHz. The first band frequency is used inbuilt in Mobile for global positioning system (GPS) at 1227.60 MHz and global systems for mobile communications (GSM) at 900 MHz application is presented in this paper. The simulated return loss is greater than 25 dB and insertion loss is less than .12 dB over the WB with center frequency 1.22 GHz. Whereas return loss is greater than 21 dB and insertion loss is less than .2 dB over the WB with center frequency 2 GHz. In addition, the isolations between the two pass bands are greater than 20 dB over the wideband. The group delay from port1 to port2 is flat and less than .8 ns over both the pass bands.
{"title":"Closely spacified wide dual-band microstrip band pass filter using coupled stepped-impedace resonators","authors":"N. Kumar, Mithilesh Kumar","doi":"10.1109/ECS.2015.7125037","DOIUrl":"https://doi.org/10.1109/ECS.2015.7125037","url":null,"abstract":"This paper presents the design and implementation of a wide dual-band band pass filter using a new method. The proposed filter is developed with two stepped-impedance resonators. Both the ends of the two resonators are mutually coupled. Transmission zeros then appears on both sides of two pass bands and in the rejection bands. The two bands of the developed filter in the paper are centered at 1.22 GHz and 2 GHz. with bandwidths .72 GHz and .7 GHz. The first band frequency is used inbuilt in Mobile for global positioning system (GPS) at 1227.60 MHz and global systems for mobile communications (GSM) at 900 MHz application is presented in this paper. The simulated return loss is greater than 25 dB and insertion loss is less than .12 dB over the WB with center frequency 1.22 GHz. Whereas return loss is greater than 21 dB and insertion loss is less than .2 dB over the WB with center frequency 2 GHz. In addition, the isolations between the two pass bands are greater than 20 dB over the wideband. The group delay from port1 to port2 is flat and less than .8 ns over both the pass bands.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123940701","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 : 2015-06-18DOI: 10.1109/ECS.2015.7124770
Simantini J. Shivankar, Manish P. Tembhurkar
VoIP is technology for transmitting voice and data over IP for communication. It has various benefits such as, voice messaging, calling, video messaging as well as video conferencing with file sharing. VoIP is better than Public Switched Telephone Network (PSTN) and cellular network. We can see all the services in VoIP based application such as Skype, Google talk. Due to the file sharing and information transformation in VoIP, there are more chances to loss valuable data information. For that the security provisions must be there. To prevent from such problem there are various techniques designed. In this research paper we study that various techniques proposed for security in VoIP environment.
{"title":"Comparative analysis on security techniques in VoIP environment","authors":"Simantini J. Shivankar, Manish P. Tembhurkar","doi":"10.1109/ECS.2015.7124770","DOIUrl":"https://doi.org/10.1109/ECS.2015.7124770","url":null,"abstract":"VoIP is technology for transmitting voice and data over IP for communication. It has various benefits such as, voice messaging, calling, video messaging as well as video conferencing with file sharing. VoIP is better than Public Switched Telephone Network (PSTN) and cellular network. We can see all the services in VoIP based application such as Skype, Google talk. Due to the file sharing and information transformation in VoIP, there are more chances to loss valuable data information. For that the security provisions must be there. To prevent from such problem there are various techniques designed. In this research paper we study that various techniques proposed for security in VoIP environment.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123966818","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 : 2015-06-18DOI: 10.1109/ECS.2015.7125032
A. Pramanik
This paper deals with an operational transresistance amplifier (OTRA) based grounded CMOS active inductor architecture and implementation of bandpass filter in the high frequency domain. The whole configuration is simulated using Cadence Virtuoso UMC 180 nm Technology.
{"title":"Design of operational transresistance amplifier based grounded active inductor and implementation of bandpass filter","authors":"A. Pramanik","doi":"10.1109/ECS.2015.7125032","DOIUrl":"https://doi.org/10.1109/ECS.2015.7125032","url":null,"abstract":"This paper deals with an operational transresistance amplifier (OTRA) based grounded CMOS active inductor architecture and implementation of bandpass filter in the high frequency domain. The whole configuration is simulated using Cadence Virtuoso UMC 180 nm Technology.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124530839","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 : 2015-06-18DOI: 10.1109/ECS.2015.7125034
R. Nithya
Monopole antenna is proposed for ultra wideband (UWB) operation is designed and simulated using HFSS software. This paper presents a monopole antenna is integrated with one side printed circuit board (PCB). Semi-circular patch with are rectangular patch above the patch a small circular hole in the patch wit. A micro strip-fed is attached to one side c shape antenna. The patch is designed on the basis of fr4 substrate is used to thickness is not so high. This is due to the fact that the ground plane may introduce extra resonant modes and change the current distribution on the antenna structure; hence to distort its performance. By optimizing any changes can increase the upper frequency and hence decreases the reflection in the higher frequency. The simulated and result is the peak value of antenna is 3 GHZ and using the application is UWB. So the frequency range is 3 to 5 GHZ. To measurement and determined the performance of S-parameter, VSWR, refection coefficient and return loss and peak value is 3GHZ.
{"title":"Monopole antenna C shape with a wide slot for UWB applications","authors":"R. Nithya","doi":"10.1109/ECS.2015.7125034","DOIUrl":"https://doi.org/10.1109/ECS.2015.7125034","url":null,"abstract":"Monopole antenna is proposed for ultra wideband (UWB) operation is designed and simulated using HFSS software. This paper presents a monopole antenna is integrated with one side printed circuit board (PCB). Semi-circular patch with are rectangular patch above the patch a small circular hole in the patch wit. A micro strip-fed is attached to one side c shape antenna. The patch is designed on the basis of fr4 substrate is used to thickness is not so high. This is due to the fact that the ground plane may introduce extra resonant modes and change the current distribution on the antenna structure; hence to distort its performance. By optimizing any changes can increase the upper frequency and hence decreases the reflection in the higher frequency. The simulated and result is the peak value of antenna is 3 GHZ and using the application is UWB. So the frequency range is 3 to 5 GHZ. To measurement and determined the performance of S-parameter, VSWR, refection coefficient and return loss and peak value is 3GHZ.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126492175","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 : 2015-06-18DOI: 10.1109/ECS.2015.7124812
K. Malarvizhi, M. Brindha, Madhusudan Kumar
Technological developments in the micro-electronics and wireless communications, in addition to obtain ability of cheap CMOS cameras and micro phones, have led to appearance of next generation networks known as Wireless Multimedia Sensor Networks (WMSNs). WMSN can retrieve image, video, audio and scalar sensor data from the physical environment. Wireless multimedia sensor networks will not only enhance existing sensor network applications like tracking, home automation, and environmental monitor, but they will also enable several new applications such as: Advanced Health Care Delivery, Industrial Process Control, Traffic Congestion Avoidance Systems. In this paper a technique called EEQAR is used to select energy efficient QoS routing which is based on cluster hierarchy. To achieve a enhanced performance, EEQAR routing implements cellular topology to form the cluster structure and balance the energy consumption by structure movement. The simulation results shows that EEQAR performs high efficiency on network lifetime and QoS in wireless multimedia sensor network.
{"title":"Evaluation of energy efficient routing in wireless multimedia sensor networks","authors":"K. Malarvizhi, M. Brindha, Madhusudan Kumar","doi":"10.1109/ECS.2015.7124812","DOIUrl":"https://doi.org/10.1109/ECS.2015.7124812","url":null,"abstract":"Technological developments in the micro-electronics and wireless communications, in addition to obtain ability of cheap CMOS cameras and micro phones, have led to appearance of next generation networks known as Wireless Multimedia Sensor Networks (WMSNs). WMSN can retrieve image, video, audio and scalar sensor data from the physical environment. Wireless multimedia sensor networks will not only enhance existing sensor network applications like tracking, home automation, and environmental monitor, but they will also enable several new applications such as: Advanced Health Care Delivery, Industrial Process Control, Traffic Congestion Avoidance Systems. In this paper a technique called EEQAR is used to select energy efficient QoS routing which is based on cluster hierarchy. To achieve a enhanced performance, EEQAR routing implements cellular topology to form the cluster structure and balance the energy consumption by structure movement. The simulation results shows that EEQAR performs high efficiency on network lifetime and QoS in wireless multimedia sensor network.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132222489","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 : 2015-06-18DOI: 10.1109/ECS.2015.7124874
K. G. Ramsundar
This paper presents a novel and cost-effective approach to convert any projected display on a flat surface into interactive touch board, through the aid of computer vision techniques. An interactive touch board is similar to that of a touch screen available in mobile phones and tablets, but then uses a special stylus for its input and a LCD projector for projecting the display on the surface. Commonly used techniques fall under any of the four categories - Resistive, Capacitive, Electromagnetic and Optical. The paper proposes a method pertaining to the optical technique - involving an infrared camera, a light emitting stylus and an image processing algorithm to determine the position pointed by the user. The stylus has an infrared LED at its tip and capable of producing a tiny spot of light on the projected surface, which is invisible to human eyes. But an IR camera with IR pass filter can be used to capture the light spot and can be processed further. This is the principle technique behind the proposed method. The image from the camera is processed using an algorithm, which determines the coordinates of the IR light. This obtained position along with some calibration parameters is sufficient to calculate the mouse cursor coordinates and thus the cursor can moved to the intended position. The whole of the image processing algorithm has been implemented using the NI LabVIEW and its associated Vision and Motion toolkits. Further, the paper deals with the study of potential applications in education and scientific research.
{"title":"Interactive touch board using IR camera","authors":"K. G. Ramsundar","doi":"10.1109/ECS.2015.7124874","DOIUrl":"https://doi.org/10.1109/ECS.2015.7124874","url":null,"abstract":"This paper presents a novel and cost-effective approach to convert any projected display on a flat surface into interactive touch board, through the aid of computer vision techniques. An interactive touch board is similar to that of a touch screen available in mobile phones and tablets, but then uses a special stylus for its input and a LCD projector for projecting the display on the surface. Commonly used techniques fall under any of the four categories - Resistive, Capacitive, Electromagnetic and Optical. The paper proposes a method pertaining to the optical technique - involving an infrared camera, a light emitting stylus and an image processing algorithm to determine the position pointed by the user. The stylus has an infrared LED at its tip and capable of producing a tiny spot of light on the projected surface, which is invisible to human eyes. But an IR camera with IR pass filter can be used to capture the light spot and can be processed further. This is the principle technique behind the proposed method. The image from the camera is processed using an algorithm, which determines the coordinates of the IR light. This obtained position along with some calibration parameters is sufficient to calculate the mouse cursor coordinates and thus the cursor can moved to the intended position. The whole of the image processing algorithm has been implemented using the NI LabVIEW and its associated Vision and Motion toolkits. Further, the paper deals with the study of potential applications in education and scientific research.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132311265","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 : 2015-06-18DOI: 10.1109/ECS.2015.7124981
Mahesha Padyana, B. A. Thomas
Raaga in carnatic classical music is one of the melodic modes of the music. It is not only characterized by set of five or more musical notes called swaras, but also associated with special ornamentations called gamaka, pauses, frequency changes and many more information. Auto generation of carnatic classical is challenging because of ornamentations. Raaga is the basic foundation for auto generation of carnatic classical. Hence modeling raaga will help to build a lowest level platform.
{"title":"Modeling carnatic classical raaga using packetization technique","authors":"Mahesha Padyana, B. A. Thomas","doi":"10.1109/ECS.2015.7124981","DOIUrl":"https://doi.org/10.1109/ECS.2015.7124981","url":null,"abstract":"Raaga in carnatic classical music is one of the melodic modes of the music. It is not only characterized by set of five or more musical notes called swaras, but also associated with special ornamentations called gamaka, pauses, frequency changes and many more information. Auto generation of carnatic classical is challenging because of ornamentations. Raaga is the basic foundation for auto generation of carnatic classical. Hence modeling raaga will help to build a lowest level platform.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132967608","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 : 2015-06-18DOI: 10.1109/ECS.2015.7124827
S. Hariharan, K. Chaitanya, P. Muthuchidambaranathan
This paper derives the theoretical average detection probability of the Fusion Center (FC) with linear minimum mean square error (MMSE) combiner. We consider a centralized cooperative multiple-input multiple-output (MIMO) antenna based reporting network. We assume the sensing channel as an additive white Gaussian noise (AWGN) and the reporting channel as an independent and identically distributed (IID) Rayleigh fading channel. To obtain the average detection probability of FC, average the statistical distribution of output signal-to-interference-plus-noise ratio (SINR) of MMSE combiner and the detection probability of FC over AWGN channel which is a generalized Marcum Q-function. We arrive at a closed form expression of average detection probability by making some approximations in the output SINR distribution where it involves hypergeometric function with two matrix arguments which in turn expressed as an infinite series of zonal polynomials.
{"title":"Analytical expression of average detection probability for a linear MMSE combiner in cognitive radio networks","authors":"S. Hariharan, K. Chaitanya, P. Muthuchidambaranathan","doi":"10.1109/ECS.2015.7124827","DOIUrl":"https://doi.org/10.1109/ECS.2015.7124827","url":null,"abstract":"This paper derives the theoretical average detection probability of the Fusion Center (FC) with linear minimum mean square error (MMSE) combiner. We consider a centralized cooperative multiple-input multiple-output (MIMO) antenna based reporting network. We assume the sensing channel as an additive white Gaussian noise (AWGN) and the reporting channel as an independent and identically distributed (IID) Rayleigh fading channel. To obtain the average detection probability of FC, average the statistical distribution of output signal-to-interference-plus-noise ratio (SINR) of MMSE combiner and the detection probability of FC over AWGN channel which is a generalized Marcum Q-function. We arrive at a closed form expression of average detection probability by making some approximations in the output SINR distribution where it involves hypergeometric function with two matrix arguments which in turn expressed as an infinite series of zonal polynomials.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132871248","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 : 2015-06-18DOI: 10.1109/ECS.2015.7125055
Kartik Chawda, Deepmala Gorana
Despite of much research activity over the past decades on mobile ad hoc wireless network (MANET), there is an important challenging issue related to mobile hosts/nodes battery power. This is owing to the prevalent constraints to extend the energy of nodes so that it could work for longer time. Moreover, battery power is also not transferable from one node to another node. The survey classifies the energy aware routing protocols, their functionality, benefits, limitations and finally the analysis of energy efficient routing protocols. The paper aims to assist those ad hoc networks, researchers and application developers in selecting appropriate energy efficient routing protocols for their work.
{"title":"A survey of energy efficient routing protocol in MANET","authors":"Kartik Chawda, Deepmala Gorana","doi":"10.1109/ECS.2015.7125055","DOIUrl":"https://doi.org/10.1109/ECS.2015.7125055","url":null,"abstract":"Despite of much research activity over the past decades on mobile ad hoc wireless network (MANET), there is an important challenging issue related to mobile hosts/nodes battery power. This is owing to the prevalent constraints to extend the energy of nodes so that it could work for longer time. Moreover, battery power is also not transferable from one node to another node. The survey classifies the energy aware routing protocols, their functionality, benefits, limitations and finally the analysis of energy efficient routing protocols. The paper aims to assist those ad hoc networks, researchers and application developers in selecting appropriate energy efficient routing protocols for their work.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132582278","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 : 2015-06-18DOI: 10.1109/ECS.2015.7124786
P. Anush, P. Karthigaikumar
Innovations and explorations carried out continuously in power grids resulted with complex interaction with the load and power source. Utilizing the communication backbone that gives the smartness for these networks with effective electric power distribution system is proposed which reduces the power consumption from the transmission main power grid, thus providing a major solution for the energy crisis. In this proposed system two types of network like Home Area Network (HAN) and Neighborhood Area Network (NAN) were employed to provide a stable power flow for minimization of the load shedding. HAN network is established with the help of IEEE 802.15.2 communication protocol for communicating between the electrical appliance to the smart meter and distributed power source like wind energy, solar energy and diesel generator to control center. NAN network is established with the help of IEEE 802.11n communication protocol for communication between smart meter and control center. Control center employs, two way communication between the power grid the local microgrid. The power management control algorithm will manage the power source depending upon the demand of the load. On surplus availability of energy, power is routed back to power grid. The simulation result provides promising improvement for the proposed power management with minimum the communication overhead.
{"title":"MicroGrid: Utilizing and allocating the available resources efficiently","authors":"P. Anush, P. Karthigaikumar","doi":"10.1109/ECS.2015.7124786","DOIUrl":"https://doi.org/10.1109/ECS.2015.7124786","url":null,"abstract":"Innovations and explorations carried out continuously in power grids resulted with complex interaction with the load and power source. Utilizing the communication backbone that gives the smartness for these networks with effective electric power distribution system is proposed which reduces the power consumption from the transmission main power grid, thus providing a major solution for the energy crisis. In this proposed system two types of network like Home Area Network (HAN) and Neighborhood Area Network (NAN) were employed to provide a stable power flow for minimization of the load shedding. HAN network is established with the help of IEEE 802.15.2 communication protocol for communicating between the electrical appliance to the smart meter and distributed power source like wind energy, solar energy and diesel generator to control center. NAN network is established with the help of IEEE 802.11n communication protocol for communication between smart meter and control center. Control center employs, two way communication between the power grid the local microgrid. The power management control algorithm will manage the power source depending upon the demand of the load. On surplus availability of energy, power is routed back to power grid. The simulation result provides promising improvement for the proposed power management with minimum the communication overhead.","PeriodicalId":202856,"journal":{"name":"2015 2nd International Conference on Electronics and Communication Systems (ICECS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131295556","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：