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Passive localization of 3-D near-field sources in coexisted multiplicative noise and additive noise

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The Journal of China Universities of Posts and Telecommunications 2013年第4期20卷 46-51页

作者： LIU Guo-hong sun Xiao-ying College of Communication Engineering Jilin University

By exploiting thvorable characteristics of a uniIbrm cross-array, a passive localization algorithm of narrowband sources in the spherical coordinates （azimuth, elevation and range） is proposed. Based on the properly chosen sensor outputs, we compute the third-order cyclic moment matrices, and exploit a pre-calibration technique to eliminate multiplicative noise. Then, we construct a parallel factor （PARAFAC） model, and adopt trilinear altemating least squares regression （TALS） to estimate three-dimensional （3-D） near-field parameters. The investigated algorithm is efficient in the sense that it can eliminate multiplicative noise and additive noise, provide the improved estimation accuracy, as well as avoid the parameter-pairing procedure. Simulation results are carried out to demonstrate the performance of the proposed algorithm.

关键词： multiplicative stationary noise additive stationary noise higher-order cyclic statistics parallel factor analysis near-field sources

Self-assembly Behavior of Symmetrical Linear ABCA Tetrablock Copolymer:A Self-consistent Field Theory Study

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Chinese Journal of Polymer Science 2018年第7期36卷 888-896页

作者： Dan Liu ying-ying Wang ying-Chun sun Yuan-Yuan Han Jie Cui Wei Jiang School of Physics Northeast Normal UniversityChangchun 130024China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Chinese Academy of Sciences Beijing 100049China

ABCA tetrablock copolymers offer new opportunities for design of materials with novel structures. Using real-space self- consistent field theory and simulation, we systematically examined the self-assembly behavior of linear ABCA tetrablock copolymers in a 2D space. The simulation was carried out under conditions of symmetrical compositions and interactions. We focus on the influence of chain length ratio of block A and interactions between block A and other blocks B and C on the self-assembly behavior of the copolymer system. The simulation results show that most of the structures self-assembled by the ABCA tetrablock copolymers are centrosymmetric, such as diblock-like lameUa phase, two kinds of lameUae with beads at interface, two kinds of hierarchical lamella phase, hexagonal honeycomb-like phase, lamella phase with mixed BC and hexagonal spheres with mixed BC. Furthermore, we find that a novel noncentrosymmetric Janus spheres can be obtained when the interaction between blocks B and C is strong, whereas a noncentrosymmetric lamella phase was obtained at weak interaction between blocks B and C. Phase diagrams for the ABCA tetrablock copolymers with different interaction strength between blocks B and C are constructed by comparing free energies of candidate ordered structures. In addition, studies on the metastable behavior of the system reveal that enthalpy plays an important role in the metastable behavior of the ABCA tetrablock copolymer system. Our work can provide useful guide for structure control of such kind of tetrablock copolymers in experiments.

关键词： Self-assembly Tetrablock copolymer Self-consistent field Simulation

lncRNA-BBOX1-2通过调控成纤维细胞生长因子受体1促进胃癌的发生和发展

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安徽医药 2025年第1期29卷 57-62,I0002页

作者：孙颖顾玮王吉郑雄上海交通大学医学院附属瑞金医院卢湾分院消化内科上海200020

目的探讨长链非编码RNA(long non-coding RNA,lncRNA)BBOX1-2通过调控成纤维细胞生长因子受体1(fibroblast growth factor receptor 1,FGFR1)对胃癌的发生发展机制的影响。方法回顾性选取2017年4月至2019年1月于上海交通大学医学院附属... 详细信息

目的探讨长链非编码RNA(long non-coding RNA,lncRNA)BBOX1-2通过调控成纤维细胞生长因子受体1(fibroblast growth factor receptor 1,FGFR1)对胃癌的发生发展机制的影响。方法回顾性选取2017年4月至2019年1月于上海交通大学医学院附属瑞金医院卢湾分院接受胃癌根治术30例病人肿瘤组织及癌旁相应正常组织作为研究对象,采用实时定量PCT(real-time PCR,RT-PCR)检测lncRNA-BBOX1-2和FGFR1表达;si-linc-BBOX1-2转染SGC-7901细胞后,通过蛋白质印迹法/细胞存活率分析(MTT)、细胞迁移和侵袭(Transwell)实验、细胞划痕、平板克隆一系列生物学功能实验,检测肿瘤细胞生物学功能及FGFR1表达的变化。结果胃癌组织中的lncRNA-BBOX1-2(3.68±0.58比1.15±0.11)和FGFR1(4.26±0.71比1.19±0.18)表达显著高于癌旁正常组织(P<0.05);si-linc-BBOX1-2转染SGC-7901细胞后,FGFR1表达下调,细胞活力、迁移、侵袭和生存能力明显下降。结论LincRNA-BBOX1-2可通过调控FGFR1的表达介导胃癌细胞的增殖、凋亡、迁移和侵袭,可能为胃癌的治疗提供了新的靶点和潜在的生物学标志物。

关键词：胃肿瘤长链非编码RNA BBOX1-2 成纤维细胞生长因子受体1 调控增殖凋亡

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A Pair Correlation Function Characterizing the Anisotropy of Force Networks

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Chinese Physics Letters 2011年第6期28卷 176-178页

作者： sun Qi-Cheng JI Shun-ying State Key Laboratory of Hydroscience and Engineering Tsinghua UniversityBeijing 100084 State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of TechnologyDalian 116023

Force networks may underlie the constitutive relations among granular solids and granular flows and inter-state ***,it is difficult to effectively describe the anisotropy of force *** propose a new pair correlation function g(r,θ)to describe the characteristic lengths and orientations of force chains that are composed of particles with contact forces greater than the threshold values.A formulation g(r,θ)≈a(r)+b(r)cos2(θ−π/2)is used to fit the g(r,θ)*** characteristic lengths and orientations of force networks are then elucidated.

关键词： networks characteristic anisotropy

Hydrophobic organic coating based water–solid TENG for water-flow energy collection and self-powered cathodic protection

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Frontiers of Materials Science 2021年第4期15卷 601-610页

作者： Yupeng LIU Guoyun sun ying LIU Weixiang sun Daoai WANG State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Institute of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Qingdao Center of Resource Chemistry and New Materials Qingdao 266100China School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266100China

Water-solid triboelectric nanogenerators(TENGs),as new energy collection devices,have attracted increasing attention in ocean energy harvesting and selfpowered *** acid(PAA)coating,usually used on the surface of marine equipment,has the property of anti-aging and anti-wear but limits triboelectrical output when used with *** this paper,polyacrylic acid coating was modified with fluorinated polyacrylate resin(F-PAA)to increase its triboelectrical output,by 6 times,and also to increase its anti-corrosion *** addition,the corrosion resistance property can be further enhanced by cathodic protection using the electrical output generated by the water-flow triboelectrical energy transfer *** their easy fabrication,water-flow energy harvesting,and corrosion resistance,PAA/F-PAA coating-based TENGs have promising applications in river and ocean energy collection and corrosion protection.

关键词： TENG hydrophobic coating energy collection anticorrosion cathodic protection

Effectiveness of oral motor respiratory exercise and vocal intonation therapy on respiratory function and vocal quality in patients with spinal cord injury:a randomized controlled trial

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Neural Regeneration Research 2021年第2期16卷 375-381页

作者： Xiao-ying Zhang Yi-Chuan Song Chang-Bin Liu Chuan Qin Song-huai Liu Jian-Jun Li School of Rehabilitation Medicine Capital Medical UniversityBeijingChina China Rehabilitation Science Institute BeijingChina Beijing Key Laboratory of Neural Injury and Rehabilitation BeijingChina Center of Neural Injury and Repair Beijing Institute for Brain DisordersBeijingChina Music Therapy Center Department of PsychologyChina Rehabilitation Research CenterBeijingChina Department of Rehabilitation Medicine Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Department of Spinal and Neural Functional Reconstruction China Rehabilitation Research CenterBeijingChina

Singing,as a method of combining respiratory function exercise and vocal intonation therapy,provides a new direction for respiratory function exercise in patients with spinal cord *** randomized controlled trial investigated the effects of oral motor respiratory exercise and vocal intonation therapy on respiratory function and vocal quality in patients with spinal cord *** 31 included patients with spinal cord injury,18 completed the *** 18 patients were randomly assigned to undergo music therapy(intervention group,30 min/d,5 times a week,for a total of 12 weeks;n=9,7 males and 2 females;30.33±11.74 years old)or normal respiratory training(control group,n=9;8 males and 1 female;34.78±11.13 years old).Both patient groups received routine treatment *** and at 6 and 12 weeks after intervention,a standard respiratory function test,a voice test,the ***'s Respiratory Questionnaire,and a quality of life questionnaire were *** results showed that the inspiratory capacity,forced expiratory volume in 1 second,forced vital capacity,maximal mid-expiratory flow rate,sing-loud pressure level,and sustained note length were significantly increased in the intervention group compared with the control *** ***'s Respiratory Questionnaire and quality of life results of patients in the intervention group were significantly superior to those in the control *** findings suggest that oral motor respiratory exercise and vocal intonation therapy,as respiratory training methods in music therapy,are effective and valuable for improving respiratory dysfunction and vocal quality in patients with spinal cord *** study was approved by the Ethics Committee of China Rehabilitation Research Center(approval No.2019-78-1)on May 27,2019 and was registered with the Chinese Clinical Trial Registry(registration number:Chi CTR1900026922)on October 26,2019.

关键词： central nervous system clinical trial injury oral motor randomized repair respiratory exercise spinal cord

SE-FCA: A Model of Software Evolution with Formal Concept Analysis

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Chinese Journal of Electronics 2015年第1期24卷 13-19页

作者： sun Xiaobing LI Bixin LI Bin CHEN ying School of Information Engineering Yangzhou University State Key Laboratory for Novel Software Technology Nanjing University School of Computer Science and Engineering Southeast University

Softwares are naturally evolved to cope with various changing system requirements. Software evolution includes a series of activities to analyze, assess, and validate the changes. This paper proposes an integrated software evolution model, namely SE-FCA, to support four core software evolution activities: program comprehension,change impact analysis, regression testing, and fault localization. These four activities are integrated and supported under the formal concept analysis technique, which is efficient to deal with the relation between entities and entity properties to provide a remarkable insight into the structure of the original relation. These activities are evaluated in a unified empirical environment. The empirical study shows the effectiveness of these activities under the SEFCA model.

关键词： Formal concept analysis Software evolution Software change

Determination of carcinoembryonic antigen using a novel amperometric enzyme-electrode based on layer-by-layer assembly of gold nanoparticles and thionine

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Science China Chemistry 2007年第1期50卷 97-104页

作者： YUAN Ruo ZHUO ying CHAI YaQin ZHANG ying sun AiLi Chongqing Key Laboratory of Analytical Chemistry College of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China

Electrochemical sensing of carcinoembryonic antigen(CEA)on a gold electrode modified by the se- quential incorporation of the mediator,thionine(Thi),and gold nanoparticles(nano-Au),through co- valent linkage and electrostatic interactions onto a self-assembled monolayer configuration is de- scribed in this *** enzyme,horseradish peroxidase(HRP),was employed to block the possible remaining active sites of the nano-Au monolayer,avoid the non-specific adsorption,instead of bovine serum albumin(BSA),and amplify the response of the antigen-antibody *** ex- periments indicated highly efficient electron transfer by the imbedded Thi mediator and adsorbed *** HRP kept its activity after immobilization,and the studied electrode showed sensitive response to CEA and high stability during a long period of *** working range for the system was 2.5 to 80.0 ng/mL with a detection limit of 0.90 ng/*** model membrane system in this work is a potential biosensor for mimicking the other immunosensor and enzyme sensor.

关键词： immunosensor gold nanoparticles(nano-Au) thionine(Thi) carcinoembryonic antigen(CEA) horseradish peroxidase(HRP) layer-by-layer(LBL)

Oxidative capacities of size-segregated haze particles in a residential area of Beijing

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Journal of Environmental Sciences 2014年第1期26卷 167-174页

作者： Zhenquan sun Longyi Shao Yujing Mu ying Hu Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing Centre for Physical and Chemical Analysis State Key Laboratory of Coal Resources and Safe Mining & College of Geoscience and Surveying Engineering China University of Mining and Technology

The frequent haze days around the Chinese capital of Beijing in recent years have aroused great attention owing to the detrimental effects on visibility and public health. To discover the potential health effects of the haze, oxidative capacities of airborne particles collected in Beijing during haze and clear days were comparably assessed by a plasmid scission assay. Eleven water-soluble trace elements （As, Cd, Cr, Cu, Mn, Ni, Pb, V, Se, T1, and Zn） in the size-segregated airborne particles were quantitatively analyzed by inductively coupled plasma mass spectrometry, and most of the water- soluble trace elements were found to mainly concentrate in the fine particle size of 0.56-1.0 μm. In comparison with clear days, the mass concentrations of 11 analyzed water-soluble trace elements remarkably increased during haze days, and the oxidative capacities determined by the plasmid scission assay were markedly elevated accordingly during the haze days under the same dosage of particles as for those during clear days. Water-soluble trace elements in airborne particles, such as Cu, V, and particularly Zn, were found to have significantly positive correlations with the plasmid DNA damage rates. Because Cu, V, and Zn have been considered as bioavailable elements, the evident increase of these elements during haze days may be greatly harmful to human health.

关键词： haze water soluble trace elements plasmid scission damage size distribution