In order to improve the efficiency of frequency response function (FRF)-based model updating, Kriging model is introduced into optimization procedure, where Kriging model replaces the finite element model (FEM) for iteration. The objective function is established based on the error of FRF data at selected frequency points. Kriging model is constructed based on sampling points generated by design of experiment. The model updating of GARTEUR structure is performed as a numerical case study, the FRF of FEM is successfully updated to match the experimental FRF. It can demonstrate the effectiveness of the application of Kriging model in FRF based model updating.
{"title":"Structural Model Updating of Frequency Response Function Based on Kriging Model","authors":"Jutao Wang, Chunjie Wang","doi":"10.1109/ICISCE.2016.142","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.142","url":null,"abstract":"In order to improve the efficiency of frequency response function (FRF)-based model updating, Kriging model is introduced into optimization procedure, where Kriging model replaces the finite element model (FEM) for iteration. The objective function is established based on the error of FRF data at selected frequency points. Kriging model is constructed based on sampling points generated by design of experiment. The model updating of GARTEUR structure is performed as a numerical case study, the FRF of FEM is successfully updated to match the experimental FRF. It can demonstrate the effectiveness of the application of Kriging model in FRF based model updating.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81116277","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}
Zhou Feng, Zhang Rui, Cheng Kai, Zhang Pei-yan, Liu Jian-zhe
In this paper, high sampling rate oscilloscope is used for measuring the carrier waveform distortion of CW(Continuous Waves) and modulation signal that passed RF PA(Power Amplifier). The comparison indicates the relationship between them. By generating power sweep CW input to PA, relative output waveform in time domain is captured. Then time domain model of PA output is got when input is quadrature modulation signal. On the view of the mathematical expression, the time-domain model is consistent with the existing concepts such as AM-AM, AM-PM and multi-harmonics. In addition, in order to describe the AM-AM effect of PA output signal at fundamental frequency, this paper also proposed a modified fitting function. Frequency spectrum of PA output is measured. Measurement and simulation based on time-domain model in this paper fits well. It verifies the behavior model based on time-domain measurement.
{"title":"Measurement and Modeling for RF Amplifier Based on Carrier Waveform Distortion in Time Domain","authors":"Zhou Feng, Zhang Rui, Cheng Kai, Zhang Pei-yan, Liu Jian-zhe","doi":"10.1109/ICISCE.2016.288","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.288","url":null,"abstract":"In this paper, high sampling rate oscilloscope is used for measuring the carrier waveform distortion of CW(Continuous Waves) and modulation signal that passed RF PA(Power Amplifier). The comparison indicates the relationship between them. By generating power sweep CW input to PA, relative output waveform in time domain is captured. Then time domain model of PA output is got when input is quadrature modulation signal. On the view of the mathematical expression, the time-domain model is consistent with the existing concepts such as AM-AM, AM-PM and multi-harmonics. In addition, in order to describe the AM-AM effect of PA output signal at fundamental frequency, this paper also proposed a modified fitting function. Frequency spectrum of PA output is measured. Measurement and simulation based on time-domain model in this paper fits well. It verifies the behavior model based on time-domain measurement.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78982689","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}
In order to realize the synchronous operation of the stage elevators, a multi-motor synchronous control scheme based on the combination of non-smooth control and state observer is proposed. For the difference among the parameters of the motor systems, and the other factors such as parameters' perturbation and outside interference, the stage elevators may not synchronize. Therefore, in order to solve the problem of the stage elevators' performance, a kind of non-smooth control method is proposed, which the multi-motor synchronization could be achieved in a finite time. At the same time, in order to monitor the acceleration, which is difficult to monitor, a state observer is developed to estimate the acceleration of the motor. Finally, the simulation results of the non-smooth control strategy and the traditional PI control strategy have been comparative analysis. And the results show that the non-smooth control strategy has stronger robustness.
{"title":"Design of Non-smooth Synchronous Control Method for Stage Lifting Machinery","authors":"Jianhui Wang, Qing Wang, Li Zhang","doi":"10.1109/ICISCE.2016.205","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.205","url":null,"abstract":"In order to realize the synchronous operation of the stage elevators, a multi-motor synchronous control scheme based on the combination of non-smooth control and state observer is proposed. For the difference among the parameters of the motor systems, and the other factors such as parameters' perturbation and outside interference, the stage elevators may not synchronize. Therefore, in order to solve the problem of the stage elevators' performance, a kind of non-smooth control method is proposed, which the multi-motor synchronization could be achieved in a finite time. At the same time, in order to monitor the acceleration, which is difficult to monitor, a state observer is developed to estimate the acceleration of the motor. Finally, the simulation results of the non-smooth control strategy and the traditional PI control strategy have been comparative analysis. And the results show that the non-smooth control strategy has stronger robustness.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75979467","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}
As people are spending more time to shop and view reviews on line, some reviewer write fake reviews to earn credit and to promote (demote) the sales of product and stores. Detecting fake reviews and spammers becomes more important when the spamming behavior is becoming damaging. This paper proposes three types of new features which include review density, semantic and emotion and gives the model and algorithm to construct each feature. Experiments show that the proposed model, algorithm and features are efficient in fake review detection task than traditional method based on content, reviewer info and behavior.
{"title":"Detecting Fake Reviews Utilizing Semantic and Emotion Model","authors":"Yuejun Li, Xiao Feng, Shuwu Zhang","doi":"10.1109/ICISCE.2016.77","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.77","url":null,"abstract":"As people are spending more time to shop and view reviews on line, some reviewer write fake reviews to earn credit and to promote (demote) the sales of product and stores. Detecting fake reviews and spammers becomes more important when the spamming behavior is becoming damaging. This paper proposes three types of new features which include review density, semantic and emotion and gives the model and algorithm to construct each feature. Experiments show that the proposed model, algorithm and features are efficient in fake review detection task than traditional method based on content, reviewer info and behavior.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76439225","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}
With the development in the field of three dimensional application and the hologram, it is necessary to go beyond the conventional interaction practices with machines, especially with computers. In contrast to conventional two dimensional interaction practices, we propose a novel human-to-machine three dimensional interaction practice which enables advanced interaction capabilities: pure direct 3D input capability, touch-free controlling capability and simultaneous multi-user interaction capability. The framework facilitates 360° 3D rotation and horizontal left and right swipe gestures. The experiment results emphasize that the framework observes and outputs the user input rotation with decent accuracy, and precisely recognizes the user inputted swipe gestures. The framework is easy to adopt. It works the same under different conditions and can be integrated easily to existing applications.
{"title":"Model-Free 3D Interaction with Rotation and Swipe Gestures Using Kinect","authors":"Shanilke Fernando, Chunyi Chen","doi":"10.1109/ICISCE.2016.105","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.105","url":null,"abstract":"With the development in the field of three dimensional application and the hologram, it is necessary to go beyond the conventional interaction practices with machines, especially with computers. In contrast to conventional two dimensional interaction practices, we propose a novel human-to-machine three dimensional interaction practice which enables advanced interaction capabilities: pure direct 3D input capability, touch-free controlling capability and simultaneous multi-user interaction capability. The framework facilitates 360° 3D rotation and horizontal left and right swipe gestures. The experiment results emphasize that the framework observes and outputs the user input rotation with decent accuracy, and precisely recognizes the user inputted swipe gestures. The framework is easy to adopt. It works the same under different conditions and can be integrated easily to existing applications.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77587415","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}
Zhigang Wu, Bing Liu, Lijuan Wu, Shuai Ma, Bing Ren, Jiangtao Su, Yan Hou
In order to effectively detect the mechanical condition of Gas Insulated Switchgear (GIS), Empirical Mode Transform (EMD) is proposed to analyze the vibration signal, then Intrinsic Mode Function is obtained. Feature matrix and similarity matrix are defined based on the power spectral density function and vector space model, forming the criterion of GIS mechanical failure. Two common GIS failure like screws loosening and particle vibration are built, which has proved its effectiveness and precise. This method would be of significance to find out potential faults and fault positioning of GIS in early stage.
{"title":"Analysis of GIS Mechanical Vibration Signal Based on EMD Algorithm","authors":"Zhigang Wu, Bing Liu, Lijuan Wu, Shuai Ma, Bing Ren, Jiangtao Su, Yan Hou","doi":"10.1109/ICISCE.2016.186","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.186","url":null,"abstract":"In order to effectively detect the mechanical condition of Gas Insulated Switchgear (GIS), Empirical Mode Transform (EMD) is proposed to analyze the vibration signal, then Intrinsic Mode Function is obtained. Feature matrix and similarity matrix are defined based on the power spectral density function and vector space model, forming the criterion of GIS mechanical failure. Two common GIS failure like screws loosening and particle vibration are built, which has proved its effectiveness and precise. This method would be of significance to find out potential faults and fault positioning of GIS in early stage.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76764346","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}
Sheng-sheng Wang, Chuangfeng Wang, Wei Liu, Qi Wang
Recently, the query on uncertain data attracts much attention and it is great significance for probabilistic reverse k neighbor query on uncertain data based on location-based services (LBS). However, the relevant research is less and immature. Probabilistic reverse k nearest neighbor (PRkNN) requests the query point of reverse k neighbor query and the probability is greater than the given threshold. The main problem of the existing research is that, when the value k is larger, a reduction of the query efficiency is obvious. In this paper, we propose an algorithm called PRCLU for PRkNN with larger k, including pruning phase and verification phase. The pruning phase with a minimum circle to enclose the uncertain data, which performs pruning with the region, then followed by probabilistic pruning strategy in sequence. The results of the experiment show that the algorithm PRCLU is better than other similar methods when k is larger.
{"title":"An Efficient Algorithm for Probabilistic RkNN Query on Uncertain Data with Large k","authors":"Sheng-sheng Wang, Chuangfeng Wang, Wei Liu, Qi Wang","doi":"10.1109/ICISCE.2016.50","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.50","url":null,"abstract":"Recently, the query on uncertain data attracts much attention and it is great significance for probabilistic reverse k neighbor query on uncertain data based on location-based services (LBS). However, the relevant research is less and immature. Probabilistic reverse k nearest neighbor (PRkNN) requests the query point of reverse k neighbor query and the probability is greater than the given threshold. The main problem of the existing research is that, when the value k is larger, a reduction of the query efficiency is obvious. In this paper, we propose an algorithm called PRCLU for PRkNN with larger k, including pruning phase and verification phase. The pruning phase with a minimum circle to enclose the uncertain data, which performs pruning with the region, then followed by probabilistic pruning strategy in sequence. The results of the experiment show that the algorithm PRCLU is better than other similar methods when k is larger.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74569603","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}
Low-dose Computed Tomography (LDCT) can effectively lower the risk of the photon radiation during the CT examinations, however, the images reconstructed under the low dose protocol tend to be severely degraded by noise and streak artifacts. Therefore, how to enhance image quality as the normal dose scanning has attracted more and more attentions among recent several decades. This work aims to improve LDCT image quality through an improved nonlocal means (INLM). The proposed INLM method improves the original NLM method by calculating the weight map from a preprocessed one. CT images reconstructed under different doses from a Siemens CT with 16 detector rows are employed in experiments. Compared with the original NLM method, the proposed technique illustrates superior noise suppression in both simulated and real LDCT datum.
{"title":"Improved Nonlocal Means for Low-Dose X-Ray CT Image","authors":"Junfeng Zhang, Y. Chen, L. Luo","doi":"10.1109/ICISCE.2016.96","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.96","url":null,"abstract":"Low-dose Computed Tomography (LDCT) can effectively lower the risk of the photon radiation during the CT examinations, however, the images reconstructed under the low dose protocol tend to be severely degraded by noise and streak artifacts. Therefore, how to enhance image quality as the normal dose scanning has attracted more and more attentions among recent several decades. This work aims to improve LDCT image quality through an improved nonlocal means (INLM). The proposed INLM method improves the original NLM method by calculating the weight map from a preprocessed one. CT images reconstructed under different doses from a Siemens CT with 16 detector rows are employed in experiments. Compared with the original NLM method, the proposed technique illustrates superior noise suppression in both simulated and real LDCT datum.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73637319","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}
Song Wei, L. Zhendong, Zhang Jinxiang, Chen Jun-fa, B. Feng, Liu Qimeng, Zhao Wei
Analysis of waveforms recorded at the site is made with the interferences such as excitation current, etc. excluded, on the basis of analysis of Extra-high Voltage(EHV) main transformer resonance mechanism and via inputting all previous resonance data by using the accuracy and reliability of electromagnetic transient simulation verification and monitoring methods, corresponding figure topology analysis function is configured according to monitoring result and is used to analyze the cause and condition of resonance. Resonance monitoring methods are put forward in combination of Hilbert-Huang Transform (HHT) and peaking pulse time interval and are used to judge the occurrence and mode of resonance. According to the components and harmonic content of monitored main harmonics, the resonance class of main transformer is defined automatically, multi-stage resonance prewarning, slight resonance reliable signaling and warning of background, direct action on series compensation control and protection system after heavy resonance exceeding limits are achieved, and the safety of capacitor is protected with resonance removed at the same time, on the basis of parameter setting, based on commissioning and decommissioning methods for series compensation and the output magnitude of wind generation set at load side by using root-mean-square algorithm. At the same time, automatic series compensation recommissioning and permanent lockout function of many times of heavy resonances are added at fixed time sections, automatic commissioning and switching of series compensation are realized, the occurrence of secondary resonance is avoided, and the safe and steady operation of EHV main transformer resonance is guaranteed effectively.
{"title":"Analysis and Study of Resonance Monitoring and Suppression Strategies of EHV Main Transformer","authors":"Song Wei, L. Zhendong, Zhang Jinxiang, Chen Jun-fa, B. Feng, Liu Qimeng, Zhao Wei","doi":"10.1109/ICISCE.2016.185","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.185","url":null,"abstract":"Analysis of waveforms recorded at the site is made with the interferences such as excitation current, etc. excluded, on the basis of analysis of Extra-high Voltage(EHV) main transformer resonance mechanism and via inputting all previous resonance data by using the accuracy and reliability of electromagnetic transient simulation verification and monitoring methods, corresponding figure topology analysis function is configured according to monitoring result and is used to analyze the cause and condition of resonance. Resonance monitoring methods are put forward in combination of Hilbert-Huang Transform (HHT) and peaking pulse time interval and are used to judge the occurrence and mode of resonance. According to the components and harmonic content of monitored main harmonics, the resonance class of main transformer is defined automatically, multi-stage resonance prewarning, slight resonance reliable signaling and warning of background, direct action on series compensation control and protection system after heavy resonance exceeding limits are achieved, and the safety of capacitor is protected with resonance removed at the same time, on the basis of parameter setting, based on commissioning and decommissioning methods for series compensation and the output magnitude of wind generation set at load side by using root-mean-square algorithm. At the same time, automatic series compensation recommissioning and permanent lockout function of many times of heavy resonances are added at fixed time sections, automatic commissioning and switching of series compensation are realized, the occurrence of secondary resonance is avoided, and the safe and steady operation of EHV main transformer resonance is guaranteed effectively.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76302892","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}
Mining important persons is significant to computer network and security, especially researches on email network centralization nowadays. Traditional PageRank algorithm is sensitive to the network disturbance because it distributes PR values evenly. This paper proposes a method which decomposes email network into different layers based on the core number, eliminates the interferential nodes from outer layers to decrease impact of interferential nodes and complexity of following procedure. Besides, it improves PageRank algorithm so as to partially solve the bias problem on nodes' weighting, rank the nodes quantitatively to find the important nodes. The experiments indicate that it improves the accuracy and reduces the computational complexity in mining important nodes from email network.
{"title":"Email Network Important Nodes Mining Using Core Number and PageRank","authors":"Xianghui Zhao, Zhirong Li, Junkai Yi","doi":"10.1109/ICISCE.2016.87","DOIUrl":"https://doi.org/10.1109/ICISCE.2016.87","url":null,"abstract":"Mining important persons is significant to computer network and security, especially researches on email network centralization nowadays. Traditional PageRank algorithm is sensitive to the network disturbance because it distributes PR values evenly. This paper proposes a method which decomposes email network into different layers based on the core number, eliminates the interferential nodes from outer layers to decrease impact of interferential nodes and complexity of following procedure. Besides, it improves PageRank algorithm so as to partially solve the bias problem on nodes' weighting, rank the nodes quantitatively to find the important nodes. The experiments indicate that it improves the accuracy and reduces the computational complexity in mining important nodes from email network.","PeriodicalId":6882,"journal":{"name":"2016 3rd International Conference on Information Science and Control Engineering (ICISCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83065565","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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