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Localization and Degree of Damage Based on Relative Curvature Difference and Frequency Perturbation

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Acta Mechanica Solida Sinica 2020年第2期33卷 187-204页

作者： Mengying Li Ziyan Wu Haifeng Yang feng yue School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an 710129China

This study proposed a damage identification method compared with the existing ones,based on relative curvature difference and frequency perturbation theory,showing sensitivity to local damage by changes in the curvature mode and high recognition accuracy of *** the relative curvature difference as a damage index,numerical simulation is used for a simply supported beam under single and multiple damage conditions for different damage *** damage is located according to the curvature mode curves,and the damage degree is qualitatively *** on the perturbation theory,the damage equations are established by the changes between frequencies before and after damage,and the damage localization and degree are verified and *** of the proposed method for identifying damage at different conditions is numerically *** method potentially promotes the development of damage identification of beam structures.

关键词： Damage localization.Damage degree Relative curvature difference Frequency perturbation Beam structures

Orientation Field Code Hashing:A Novel Method for Fast Palmprint Identification

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IEEE/CAA Journal of Automatica Sinica 2021年第5期8卷 1038-1051页

作者： Xi Chen Ming Yu feng yue Bin Li the School of Electronic and Information Engineering Hebei University of Technology(HEBUT)Tianjin 300401 Beijing Institute of New Technology Applications Beijing Academy of Sciences and TechnologyBeijing 100035China the School of Articial Intelligence Hebei University of Technology(HEBUT)Beijing 100035China

For a large-scale palmprint identification system,it is necessary to speed up the identification process to reduce the response time and also to have a high rate of identification *** this paper,we propose a novel hashing-based technique called orientation field code hashing for fast palmprint *** investigating hashing-based algorithms,we first propose a double-orientation encoding method to eliminate the instability of orientation codes and make the orientation codes more ***,we propose a window-based feature measurement for rapid searching of the *** explore the influence of parameters related to hashing-based palmprint *** have carried out a number of experiments on the Hong Kong Poly U large-scale database and the CASIA palmprint database plus a synthetic *** results show that on the Hong Kong Poly U large-scale database,the proposed method is about 1.5 times faster than the state-of-the-art ones,while achieves the comparable identification *** the CASIA database plus the synthetic database,the proposed method also achieves a better performance on identification speed.

关键词： Biometric system hashing orientation feature palmprint identification

When MAGE meets RING:insights into biological functions of MAGE proteins

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Protein & Cell 2011年第1期2卷 7-12页

作者： yue feng Jinlan Gao Maojun Yang MOE Key Laboratory of Bioinformatics Tsinghua UniversityBeijing 100084China Center for Structural Biology School of Life SciencesTsinghua UniversityBeijing 100084China National Laboratory of Medical Molecular Biology Peking Union Medical CollegeTsinghua UniversityBeijing 100084China

The melanoma antigen(MAGE)family proteins are well known as tumor-specific antigens and comprise more than 60 genes,which share a conserved MAGE homology domain(MHD).Type I MAGEs are highly expressed cancer antigens,and they play an important role in tumorigenesis and cancer cell ***,several MAGE proteins were identified to interact with RING domain proteins,including a sub-family of E3 ubiquitin *** binding mode between MAGEs and RING proteins was investigated and one important structure of these MAGE-RING complexes was solved:the MAGE-G1-NSE1 *** and biochemical studies indicated that MAGE proteins could adjust the E3 ubiquitin ligase activity of its cognate RING partner both in vitro and in ***,the underlying mechanism was not fully ***,we review these exciting advances in the studies on MAGE family,suggest potential mechanisms by which MAGEs activate the E3 activity of their binding RING proteins and highlight the anticancer potential of this family proteins.

关键词： MAGE cancer testis antigen RING ubiquitin ligase TRIM28

Novel disjoint path selection scheme based on link availability in ASON

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The Journal of China Universities of Posts and Telecommunications 2007年第3期14卷 70-73页

作者： WANG Xian-qing LU yue-ming JI yue-feng Key Laboratory of Optical Communication and Lightwave Technologies Ministry of Education Beijing University of Posts and TelecommunicationsBeijing 100876 China

Risk-disjoint routing is an efficient way to improve network survivability. In this article, a partial risk-disjoint routing algorithm based on link availability （PRDRA-LA） is proposed based on the complete risk-disjoint routing algorithm （CRDRA）. While calculating the protection path with PRDRA-LA, the links that share risks with the links in the working path are filtered by link availability. In addition, the risk disjoint degree between the protection path and the working path can be adjusted freely. Simulation results showed that when compared with CRDRA, routing connections with PRDRA-LA can achieve improved survivability while the number of connections that can be successfully routed over the current network is kept from serious decline.

关键词： automatically switched optical network risk- sharing links partial risk-disjoint routing algorithm based on link availability risk-disjoint degree

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Journal of Computer Science & Technology 2016年第4期31卷 741-758页

作者： yue-feng Du De-Rong Shen Tie-Zheng Nie yue Kou Ge Yu College of Information Science and Engineering Northeastern University Shenyang 110819 China

Conditional functional dependencies （CFDs） are a critical technique for detecting inconsistencies while they may ignore some potential inconsistencies without considering the content relationship of data. Content-related conditional functional dependencies （CCFDs） are a type of special CFDs, which combine content-related CFDs and detect potential inconsistencies by putting content-related data together. In the process of cleaning inconsistencies, detection and repairing are interactive： 1） detection catches inconsistencies, 2） repairing corrects caught inconsistencies while may bring new incon- sistencies. Besides, data are often fragmented and distributed into multiple sites. It consequently costs expensive shipment for inconsistencies cleaning. In this paper, our aim is to repair inconsistencies in distributed content-related data. We propose a framework consisting of an inconsistencies detection method and an inconsistencies repairing method, which work iteratively. The detection method marks the violated CCFDs for computing the inconsistencies which should be repaired preferentially. Based on the repairing-cost model presented in this paper, we prove that the minimum-cost repairing using CCFDs is NP-complete. Therefore, the repairing method heuristically repairs the inconsistencies with minimum cost. To improve the efficiency and accuracy of repairing, we propose distinct values and rules sequences. Distinct values make less data shipments than real data for communication. Rules sequences determine appropriate repairing sequences to avoid some incorrect repairs. Our solution is proved to be more effective than CFDs by empirical evaluation on two real-life datasets.

关键词： data quality management distributed consistency content relativity consistency repairing

Ammonium Effects on Nitrate Uptake by Roots of Upland and Paddy Rice Seedlings Related to Membrane Potential Differences

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Agricultural Sciences in China 2010年第6期9卷 799-805页

作者： WANG Xiao-li WANG Yu-qian TAO yue-yue feng Ke College of Environmental Science and Engineering Yangzhou University Yangzhou 225009 P.R. China

Nitrate uptake characteristics and ammonium effects on nitrate uptake were compared between upland rice （Brazilian upland rice） and paddy rice （Wuyujing 3 and Yangdao 6） through the glass microelectrode technique and the concentration gradient method of uptake *** indicated that nitrate uptake by rice seedlings and ammonium effects were depending on membrane potential of root *** upland rice and paddy rice presented obviously different *** all cultivars,the nitrate treatments induced rapid depolarization and then slow repolarization of membrane potential in root epidermal cells,and even hyperpolarization was observed when nitrate concentration was *** membrane potential of epidermal cells in Brazilian upland rice roots was larger and its response to NO3- was bigger than those of two paddy rice *** of membrane potential was amplified when ammonium was simultaneously added with nitrate into the measure medium,but repolarization was reduced,even *** upland rice seedlings had high Vmax of nitrate uptake and low Km,furthermore,Vmax and Km were little affected by ammonium,but Vmax of Wuyujing 3 was reduced ***,inhibition of NH4＋ differed obviously between upland rice and paddy rice.

关键词： nitrate uptake membrane potential ammonium upland rice paddy rice

Supporting multi-user real-time VBR video service using dynamic bandwidth management based on prediction

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The Journal of China Universities of Posts and Telecommunications 2009年第6期16卷 64-71页

作者： XU Zhi-yuan LI Hui LU yue-ming JI yue-feng Key Laboratory of Optical Communications and Lightwave Technologies Beijing University of Posts and Telecommunications Beijing 100876 China

Real-time variable bit rate（VBR） video is expected to take a significant portion of multimedia ***,plentiful challenges to VBR video service provision have been raised for its characteristic of high traffic *** support multi-user real-time VBR video transmission with high bandwidth utilization and satisfied quality of service（QoS）,this article proposes a practical dynamic bandwidth management *** scheme forecasts future media rate of VBR video by employing time-domain adaptive linear predictor and using media delivery index（MDI） as both QoS measurement and complementary management *** addition,to support multi-user application,an adjustment priorities classified strategy is also put ***,a test-bed based on this management scheme is *** experimental results demonstrate that the scheme proposed in this article is efficient with bandwidth utilization increased by 20%-60% compared to a fixed service rate and QoS guaranteed.

关键词： dynamic bandwidth management MDI QoS real-time time-domain adaptive linear predictor VBR video

Flexible scheduling ensuring inter-ONU-group fairness in 1G/10G EPON coexistence system

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The Journal of China Universities of Posts and Telecommunications 2009年第4期16卷 16-22页

作者： LI Qi LI Hui JI yue-feng Key Laboratory of Optical Communications and Lightwave Technologies Beijing University of Posts and Telecommunications Beijing 100876 China

In recent years, 10 Gbit/s Ethemet passive optical networks （10G EPON） have been gaining considerable interests because of its high bandwidth capability. To ensure smooth transition from 1 Gbit/s to 10 Gbit/s equipment and to avoid a significant one-time investment into such a cost-sensitive market, coexistence of gigabit Ethernet passive optical networks （GEPON） and 10G EPON system are necessary. In this article, coexistence system architecture and a novel bandwidth allocation algorithm called weight-optimized dynamic bandwidth allocation for coexistence EPON （WOCE-DBA） for the system is proposed. The simulation results show that this algorithm can guarantee fair bandwidth sharing among different optical network unit （ONU） groups, without ignoring the inter-ONU and intra-ONU fairness. Most importantly, it can flexibly adapt to the system composition variations and save efforts needed to modify the bandwidth scheduling mechanism during the migration process from GEPON to 10G EPON.

关键词： 10G EPON coexistence system dynamic bandwidth allocation (DBA) intra-ONU-group fairness simulation and modeling

Research progress on discretization of fractional Fourier transform

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Science in China(Series F) 2008年第7期51卷 859-880页

作者： TAO Ran ZHANG feng WANG yue Department of Electronic Engineering Beijing Institute of Technology Beijing 100081 China

As the fractional Fourier transform has attracted a considerable amount of attention in the area of optics and signal processing, the discretization of the fractional Fourier transform becomes vital for the application of the fractional Fourier transform. Since the discretization of the fractional Fourier transform cannot be obtained by directly sampling in time domain and the fractional Fourier domain, the discretization of the fractional Fourier transform has been investigated recently. A summary of discretizations of the fractional Fourier transform developed in the last nearly two decades is presented in this paper. The discretizations include sampling in the fractional Fourier domain, discrete-time fractional Fourier transform, fractional Fourier series, discrete fractional Fourier transform （including 3 main types： linear combination-type; sampling-type; and eigen decomposition-type）, and other discrete fractional signal transform. It is hoped to offer a doorstep for the readers who are interested in the fractional Fourier transform.

关键词： fractional Fourier transform sampling in the fractional Fourier domain discrete-time fractional Fourier transform fractional Fourier series discrete fractional Fourier transform