J. Shinde, Raj Kumar, M. Uplane, P. N. Shinde, B. K. Mishra
This paper presents the effect on resonant frequency of multilayer circular annular ring microstrip antenna. Three nearly circular annular ring microstrip antennas (ARMSA) have been fabricated on FR4 substrate of dielectric constant 4.3 and thickness 1.53mm of various dimensions. Experimental resonant frequency of simple circular ARMSA, covered circular ARMSA, spaced dielectric circular ARMSA and circular ARMSA with two superstrates have been measured and compared with the calculated resonant frequency from full wave analysis. The average % deviation of all these ARMSA are respectively found as -0.278%, 1.03%, -0.535% and 0.5%. The measured and calculated resonant frequencies are in good agreement. The Simple nearly circular ARMSA, fed diagonally at the center of the radiating patch is studied for circular polarization (CP) with 3dB Axial Ratio bandwidth. The three types of ARMSA has been designed and fabricated and found to have a CP-3 dB axial ratio bandwidth of 5.2%, 4.16% and 2.06% at their center fundamental resonant frequency. This type of study is useful for wideband, high gain antenna and to calculate the radome and environmental effect on resonant frequency.
{"title":"Effect of superstrates on the resonant frequency of a circularly polarized nearly circular annular ring patch","authors":"J. Shinde, Raj Kumar, M. Uplane, P. N. Shinde, B. K. Mishra","doi":"10.1145/1980022.1980253","DOIUrl":"https://doi.org/10.1145/1980022.1980253","url":null,"abstract":"This paper presents the effect on resonant frequency of multilayer circular annular ring microstrip antenna. Three nearly circular annular ring microstrip antennas (ARMSA) have been fabricated on FR4 substrate of dielectric constant 4.3 and thickness 1.53mm of various dimensions. Experimental resonant frequency of simple circular ARMSA, covered circular ARMSA, spaced dielectric circular ARMSA and circular ARMSA with two superstrates have been measured and compared with the calculated resonant frequency from full wave analysis. The average % deviation of all these ARMSA are respectively found as -0.278%, 1.03%, -0.535% and 0.5%. The measured and calculated resonant frequencies are in good agreement. The Simple nearly circular ARMSA, fed diagonally at the center of the radiating patch is studied for circular polarization (CP) with 3dB Axial Ratio bandwidth. The three types of ARMSA has been designed and fabricated and found to have a CP-3 dB axial ratio bandwidth of 5.2%, 4.16% and 2.06% at their center fundamental resonant frequency. This type of study is useful for wideband, high gain antenna and to calculate the radome and environmental effect on resonant frequency.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129699660","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}
NOTE FROM ACM: It has been determined that this paper plagiarized earlier works. Therefore ACM has shut off access to this paper.
来自ACM的说明:已经确定这篇论文抄袭了早期的作品。因此，ACM关闭了对这篇论文的访问。
{"title":"A survey of issues of query optimization in parallel databasesNOTE FROM ACM: It has been determined that this paper plagiarized earlier works. Therefore ACM has shut off access to this paper.","authors":"S. Mahajan, V. Jadhav","doi":"10.1145/1980022.1980140","DOIUrl":"https://doi.org/10.1145/1980022.1980140","url":null,"abstract":"NOTE FROM ACM: It has been determined that this paper plagiarized earlier works. Therefore ACM has shut off access to this paper.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128419931","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}
Flexible fixturing is an essential ingredient of flexible manufacturing systems (FMS) and computer-integrated manufacturing systems (CIMS). Computer-aided fixture design (CAFD) has become a research focus in implementing FMS and CIMS. This paper, presents an overview of interactive computer software developed with CAD interface for designing fixtures for machining centers (HMC/VMC). An exhaustive set of structured queries incorporated in the preprocessor prompts the designer to extract qualitative and quantitative part features. The database and decision support system (i.e., the rule base and the knowledge base) built into the design module assist the designer to select and position locators, calculate clamping forces, decide number and types of clamps, their locations and orientations, etc. Finally, in the post processor the bill of material, part and assembly drawings are obtained. A case study for the design of fixture for a Roller-head is presented and results are discussed. The implementation of the system has proved to be a quick and effective tool that reduces the design lead time from a few days to a few hours and requires fractional efforts and expertise on the part of the designer.
{"title":"Computer integrated fixture design system","authors":"M. Yadav, Prof. (Dr) Suhas Sakharam Mohite","doi":"10.1145/1980022.1980191","DOIUrl":"https://doi.org/10.1145/1980022.1980191","url":null,"abstract":"Flexible fixturing is an essential ingredient of flexible manufacturing systems (FMS) and computer-integrated manufacturing systems (CIMS). Computer-aided fixture design (CAFD) has become a research focus in implementing FMS and CIMS. This paper, presents an overview of interactive computer software developed with CAD interface for designing fixtures for machining centers (HMC/VMC). An exhaustive set of structured queries incorporated in the preprocessor prompts the designer to extract qualitative and quantitative part features. The database and decision support system (i.e., the rule base and the knowledge base) built into the design module assist the designer to select and position locators, calculate clamping forces, decide number and types of clamps, their locations and orientations, etc. Finally, in the post processor the bill of material, part and assembly drawings are obtained. A case study for the design of fixture for a Roller-head is presented and results are discussed. The implementation of the system has proved to be a quick and effective tool that reduces the design lead time from a few days to a few hours and requires fractional efforts and expertise on the part of the designer.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128264436","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}
Web user to avoid waiting to download a large file before seeing the video or hearing the sound. Instead, the media is sent in a continuous stream and is played as it arrives. The compressions of the video allow it to be played simultaneously. Depending on your choice of media player and the file's compression rate, the time it takes for the video to stream may vary. The file is hosted on a server which can "multi-cast" the same file to multiple users at the same time. When you click on the on the video it is partially loaded before you can access it. This is known as "buffering". Now let's take a look on how to cut down on buffering time, stop slow streaming video and eliminate choppy PC video playback. Video has been an important media for communications and entertainment for many decades. Initially video was captured and transmitted in analog form. The advent of digital integrated circuits and computers lead to the digitization of video, and digital video enabled a revolution in the compression and communication of video. This Paper introduces the proposed architecture and algorithm for video streaming.
{"title":"Multimedia resource library using video streaming","authors":"A. Mane, B. Waykar, S. Narvekar","doi":"10.1145/1980022.1980413","DOIUrl":"https://doi.org/10.1145/1980022.1980413","url":null,"abstract":"Web user to avoid waiting to download a large file before seeing the video or hearing the sound. Instead, the media is sent in a continuous stream and is played as it arrives. The compressions of the video allow it to be played simultaneously. Depending on your choice of media player and the file's compression rate, the time it takes for the video to stream may vary. The file is hosted on a server which can \"multi-cast\" the same file to multiple users at the same time. When you click on the on the video it is partially loaded before you can access it. This is known as \"buffering\". Now let's take a look on how to cut down on buffering time, stop slow streaming video and eliminate choppy PC video playback. Video has been an important media for communications and entertainment for many decades. Initially video was captured and transmitted in analog form. The advent of digital integrated circuits and computers lead to the digitization of video, and digital video enabled a revolution in the compression and communication of video. This Paper introduces the proposed architecture and algorithm for video streaming.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129678963","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}
CNTs with their fascinating properties have been gathering lots of attention in the recent past for their applications as the future of nanoelectronics. This paper presents the analysis of the characteristics of CNT device for different dielectrics, namely SiO2 (3.9) and HfO2(25). HfO2 has shown better capacitance, transconductance and Ion/I off ratio than SiO2 for the same back gate structure and same thickness of oxide with the later being almost 4-5 times than in SiO2 thus indicating excellent off states.
{"title":"Enhancement in the performance of CNTFET by the use of high-k dielectric, HfO2","authors":"D. G. P. Hangargekar, V. Menon, A. Gajarushi","doi":"10.1145/1980022.1980388","DOIUrl":"https://doi.org/10.1145/1980022.1980388","url":null,"abstract":"CNTs with their fascinating properties have been gathering lots of attention in the recent past for their applications as the future of nanoelectronics. This paper presents the analysis of the characteristics of CNT device for different dielectrics, namely SiO2 (3.9) and HfO2(25). HfO2 has shown better capacitance, transconductance and Ion/I off ratio than SiO2 for the same back gate structure and same thickness of oxide with the later being almost 4-5 times than in SiO2 thus indicating excellent off states.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130099587","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}
Metal to Carbon Relays are used in railway signaling for operating various signaling functions viz. signals/points/track circuits etc. These relays consist of a metal (Silver) contact and a Carbon (Silver Impregnated Graphite) contact, which make and break as per the signaling logic and switch on the current to the signaling equipment. The reliability of these relays is very poor. One major reason of poor reliability is the high contact resistance developed in the SIG contacts, due to which the relay stops picking up and fails. Failure of these relays causes disruption to train operations and adversely affects the train punctuality. It may also result in unsafe situation for train traffic. The quality of metal to carbon relays needs to be enhanced so as to ensure safe train operations and to alleviate passenger grievances caused due to frequent disruptions in train operations.
{"title":"Reliability issues of metal to carbon relays used in railway signaling","authors":"H. Kagra, P. Sonare","doi":"10.1145/1980022.1980291","DOIUrl":"https://doi.org/10.1145/1980022.1980291","url":null,"abstract":"Metal to Carbon Relays are used in railway signaling for operating various signaling functions viz. signals/points/track circuits etc. These relays consist of a metal (Silver) contact and a Carbon (Silver Impregnated Graphite) contact, which make and break as per the signaling logic and switch on the current to the signaling equipment. The reliability of these relays is very poor. One major reason of poor reliability is the high contact resistance developed in the SIG contacts, due to which the relay stops picking up and fails. Failure of these relays causes disruption to train operations and adversely affects the train punctuality. It may also result in unsafe situation for train traffic. The quality of metal to carbon relays needs to be enhanced so as to ensure safe train operations and to alleviate passenger grievances caused due to frequent disruptions in train operations.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130706803","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}
This paper describes the methods to increase the capacity of the cover image for information hiding. In this paper we have proposed two novel multiple least significant bit replacement techniques KIMLA and KAMLA to increase the information hiding capacity of the cover image. Comparative results of KIMLA, KAMLA and their previous version KMLA [1] are also shown. These novel techniques use multiple LSB'S bit replacement technique to hide the secret information. The proposed methods KAMLA and KIMLA have shown better results for AFCPV, PBC ratios and they have been tested for secret information in image as well as text form.
{"title":"Increased cover capacity using advanced multiple LSB algorithms","authors":"H. B. Kekre, A. Athawale, U. Athawale","doi":"10.1145/1980022.1980029","DOIUrl":"https://doi.org/10.1145/1980022.1980029","url":null,"abstract":"This paper describes the methods to increase the capacity of the cover image for information hiding. In this paper we have proposed two novel multiple least significant bit replacement techniques KIMLA and KAMLA to increase the information hiding capacity of the cover image. Comparative results of KIMLA, KAMLA and their previous version KMLA [1] are also shown. These novel techniques use multiple LSB'S bit replacement technique to hide the secret information. The proposed methods KAMLA and KIMLA have shown better results for AFCPV, PBC ratios and they have been tested for secret information in image as well as text form.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132138847","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}
Almost all mobile phones available in the market support the programming language Java i. e. J2ME, but majority of these phones do not support the following file formats - .doc, .docx, .ppt and .rtf. These phones allow only .txt files to be viewed. Presently there is no software that allows java enabled phones to view these files. So users have to convert these files to .txt and in the case of .ppt, they have to convert it into an image. Since these files are important for many users, this causes a lot of inconvenience to them. In this paper we propose a 'Mobile Office' application which will make it possible for all java enabled mobile phone users to view the above mentioned files. Moreover, this will opiate the need to convert a .doc, .docx or .rtf file to .txt to be able to view them on the phone. We also describe the approach about how the above file formats can be accessed. This approach will enable these files to be accessed in low end java enabled devices with relative ease.
{"title":"Algorithm to access office files on mobile phone","authors":"S. Shah, D. Kalbande, Presha Shah, J. Rudani","doi":"10.1145/1980022.1980112","DOIUrl":"https://doi.org/10.1145/1980022.1980112","url":null,"abstract":"Almost all mobile phones available in the market support the programming language Java i. e. J2ME, but majority of these phones do not support the following file formats - .doc, .docx, .ppt and .rtf. These phones allow only .txt files to be viewed. Presently there is no software that allows java enabled phones to view these files. So users have to convert these files to .txt and in the case of .ppt, they have to convert it into an image. Since these files are important for many users, this causes a lot of inconvenience to them. In this paper we propose a 'Mobile Office' application which will make it possible for all java enabled mobile phone users to view the above mentioned files. Moreover, this will opiate the need to convert a .doc, .docx or .rtf file to .txt to be able to view them on the phone. We also describe the approach about how the above file formats can be accessed. This approach will enable these files to be accessed in low end java enabled devices with relative ease.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130821855","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}
Electroencephalography is a medical imaging technique that reads scalp electrical activity generated by brain structures. The electroencephalogram (EEG) is defined as electrical activity of an alternating type recorded from the scalp surface after being picked up by metal electrodes and conductive media. We will refer only to EEG measured from the head surface. The recognition of epileptic waveform from EEG signal is important physiological task as epilepsy is still one of the most frequently occurring disorder. The main aim of this paper is to provide new method to diagnose the epileptic waveform directly from the EEG, by performing quick signal processing which makes it possible to apply in on-line monitoring system. This is done in two steps. In the first step, by using multi-resolution wavelet decomposition, we obtain different spectral components (α, β, Δ, θ) of the measured signal. These components serve as input signals for the artificial neural network (ANN), which accomplishes the recognition of epileptic waveforms. Use of ANN makes the rate of recognition very high and also makes the on-line monitoring and 'paperless' task of EEG analysis.
{"title":"Epilepsy disorder detection by EEG signal decomposition using wavelet transform","authors":"R. More, R. Kawitkar","doi":"10.1145/1980022.1980314","DOIUrl":"https://doi.org/10.1145/1980022.1980314","url":null,"abstract":"Electroencephalography is a medical imaging technique that reads scalp electrical activity generated by brain structures. The electroencephalogram (EEG) is defined as electrical activity of an alternating type recorded from the scalp surface after being picked up by metal electrodes and conductive media. We will refer only to EEG measured from the head surface. The recognition of epileptic waveform from EEG signal is important physiological task as epilepsy is still one of the most frequently occurring disorder. The main aim of this paper is to provide new method to diagnose the epileptic waveform directly from the EEG, by performing quick signal processing which makes it possible to apply in on-line monitoring system. This is done in two steps. In the first step, by using multi-resolution wavelet decomposition, we obtain different spectral components (α, β, Δ, θ) of the measured signal. These components serve as input signals for the artificial neural network (ANN), which accomplishes the recognition of epileptic waveforms. Use of ANN makes the rate of recognition very high and also makes the on-line monitoring and 'paperless' task of EEG analysis.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128992342","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}
There are two types of decoding techniques, trace back method (TBM) and register exchange method (REM). In trace back method, memory requirement is high. TBM is the preferred method used in Viterbi decoders (VD) having large constraint length and high performance. However, the TBM has drawbacks, which requires last-in-first-out (LIFO) buffer and has to use multiple read operations for high speed operation. This multiple operation results in complex control logic In register exchange method, the no. of switching activities is high. So total power dissipation is high. Using Hybrid register exchange, no. of switching activities is reduced and so the total power dissipation is reduced. So we concentrate more on REM. There are two types of decision outputs, hard output and soft output. In hard decision output, error correcting capability is less as compared to soft output decision. So to increase the accuracy as compared with hard decision outputs, soft output viterbi algorithm is used.. In this paper, we propose a new approache hybrid register exchange method (HREM). The simulation model is ready. The main advantage of the proposed method is that it reduces the number of decoding operation and memory read operations, less switching activity and fewer requirements on additional control logic.
译码技术有两种:回溯法(trace back method, TBM)和寄存器交换法(register exchange method, REM)。在回溯方法中，对内存的要求很高。TBM具有约束长度大、性能好等优点，是Viterbi译码器的首选方法。然而，TBM有缺点，它需要后进先出(LIFO)缓冲区，并且必须使用多个读取操作来实现高速操作。这种多重操作导致控制逻辑复杂，在寄存器交换方法中，没有。交换活动的比率很高。所以总功耗很高。使用混合寄存器交换，没有。减少了开关活动，从而降低了总功耗。因此，我们更加关注快速眼动的决策输出，它有两种类型:硬输出和软输出。在硬决策输出中，纠错能力较软决策差。因此，为了提高与硬决策输出相比的精度，采用了软输出viterbi算法。本文提出了一种新的混合寄存器交换方法(HREM)。仿真模型已经准备好。该方法的主要优点是减少了解码操作和存储器读取操作的数量，减少了切换活动，减少了对额外控制逻辑的要求。
{"title":"Soft output Viterbi decoder using hybrid register exchange","authors":"D. M. Khatri, S. Haridas","doi":"10.1145/1980022.1980223","DOIUrl":"https://doi.org/10.1145/1980022.1980223","url":null,"abstract":"There are two types of decoding techniques, trace back method (TBM) and register exchange method (REM). In trace back method, memory requirement is high. TBM is the preferred method used in Viterbi decoders (VD) having large constraint length and high performance. However, the TBM has drawbacks, which requires last-in-first-out (LIFO) buffer and has to use multiple read operations for high speed operation. This multiple operation results in complex control logic In register exchange method, the no. of switching activities is high. So total power dissipation is high. Using Hybrid register exchange, no. of switching activities is reduced and so the total power dissipation is reduced. So we concentrate more on REM. There are two types of decision outputs, hard output and soft output. In hard decision output, error correcting capability is less as compared to soft output decision. So to increase the accuracy as compared with hard decision outputs, soft output viterbi algorithm is used.. In this paper, we propose a new approache hybrid register exchange method (HREM). The simulation model is ready. The main advantage of the proposed method is that it reduces the number of decoding operation and memory read operations, less switching activity and fewer requirements on additional control logic.","PeriodicalId":197580,"journal":{"name":"International Conference & Workshop on Emerging Trends in Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123483751","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：