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Specificity-preserving RGB-D saliency detection

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Computational Visual Media 2023年第2期9卷 297-317页

作者： Tao zhou Deng-ping Fan Geng Chen yi zhou Huazhu Fu School of Computer Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China Key Laboratory of System Control and Information Processing Ministry of EducationShanghaiChina Computer Vision Lab ETH Z¨urichZ¨urichSwitzerland School of Computer Science and Engineering Northwestern Polytechnical UniversityXi’anChina School of Computer Science and Engineering Southeast UniversityNanjingChina Inception Institute of Artificial Intelligence Abu DhabiUnited Arab Emirates

Salient object detection(SOD)in RGB and depth images has attracted increasing research *** RGB-D SOD models usually adopt fusion strategies to learn a shared representation from RGB and depth modalities,while few methods explicitly consider how to preserve modality-specific *** this study,we propose a novel framework,the specificity-preserving network(SPNet),which improves SOD performance by exploring both the shared information and modality-specific ***,we use two modality-specific networks and a shared learning network to generate individual and shared saliency prediction *** effectively fuse cross-modal features in the shared learning network,we propose a cross-enhanced integration module(CIM)and propagate the fused feature to the next layer to integrate cross-level ***,to capture rich complementary multi-modal information to boost SOD performance,we use a multi-modal feature aggregation(MFA)module to integrate the modalityspecific features from each individual decoder into the shared *** using skip connections between encoder and decoder layers,hierarchical features can be fully *** experiments demonstrate that our SPNet outperforms cutting-edge approaches on six popular RGB-D SOD and three camouflaged object detection *** project is publicly available at https://***/taozh2017/SPNet.

关键词： salient object detection(SOD) RGB-D cross-enhanced integration module(CIM) multi-modal feature aggregation(MFA)

针刺不同经穴对正常人事件相关电位P3a和P3b的影响

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中西医结合学报 2012年第1期10卷 48-53页

作者：蔡荣林胡玲吴子建汪克明何璐周逸平赵仑胡吴斌安徽中医学院针灸经络研究所安徽合肥230038 北京飞宇星科技有限公司EEG/ERP实验室北京100097

目的:探讨针刺不同经脉穴位对大脑注意功能的影响,为进一步揭示针刺心经经穴神门效应的脑功能与脑整合机制奠定基础。方法:选择10名健康青年大学生作为试验对象,采用视觉新奇刺激和靶刺激诱导P3a和P3b电位,采用Neuroscan事件相关电位系... 详细信息

目的:探讨针刺不同经脉穴位对大脑注意功能的影响,为进一步揭示针刺心经经穴神门效应的脑功能与脑整合机制奠定基础。方法:选择10名健康青年大学生作为试验对象,采用视觉新奇刺激和靶刺激诱导P3a和P3b电位,采用Neuroscan事件相关电位系统,选择测量时间窗口为330～430ms和400～600ms,观察手针心经神门穴与肺经太渊穴前后P300强度分布的变化。结果:针刺神门或太渊后P3a、P3b的波幅均显著降低,但降低的程度受针刺穴位的调控和影响;在电极FCz记录位置,针刺神门引起更大程度的P3a波幅的降低(P<0.05)。结论:手针神门或太渊穴均能影响大脑的注意功能,针刺神门对人体大脑注意功能的影响更大。

关键词：针刺穴位事件相关电位 P300 神门太渊人类实验

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医师职业精神测量与评价体系研究进展

中国医学伦理学 2017年第9期30卷 1137-1141页

作者：石晓兰李文秀秦岭周诣周萍薛迪上海中医药大学附属普陀医院教育科上海200062 上海市普陀区卫生和计划生育委员会上海200060 复旦大学公共卫生学院上海200032

从测评职业行为、测评的多源性、测评同理心以及跨文化背景等几个方面分析了国外测量与评价体系,同时分析论述了国内测评与评价体系发展的基本状况,并从评价视角的多元性和全面性、评价项目的具体性和客观性、评价指标的明确性和定量性... 详细信息

从测评职业行为、测评的多源性、测评同理心以及跨文化背景等几个方面分析了国外测量与评价体系,同时分析论述了国内测评与评价体系发展的基本状况,并从评价视角的多元性和全面性、评价项目的具体性和客观性、评价指标的明确性和定量性、评价体系的开放性和反馈性四个方面进行了分析,对近年来国内外医师职业精神的测量与评价方法作了回顾,指出设计构建良好的测量与评价体系是深化医师职业精神研究的必由之路。

关键词：医师职业精神医疗卫生医学伦理

Metal-organic frameworks for electrochemical reduction of carbon dioxide: The role of metal centers

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Journal of Energy Chemistry 2020年第1期29卷 156-170,I0006页

作者： ping Shao Luocai yi Shumei Chen Tianhua zhou Jian Zhang State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina College of Chemistry Fuzhou UniversityFuzhou 350002FujianChina

Direct electrochemical reduction of CO2 into valuable chemicals and fuel is one of the most promising approaches to address the current energy crisis and lower CO2 ***,numerous metal-organic framework(MOF)and their derived materials have extensively been developed as electrocatalysts for CO2 reduction owing to their unique structure including porosity,large specific surface area,and tunable chemical *** this review,the recent progress of MOF-based electrocatalysts for CO2 reduction was summarized and *** discussions mainly focus on the synthesis and mechanism of pristine MOFs and MOF-derived materials for electrocatalytic CO2 *** examples are expected to provide clues to rational design and synthesis of stable and high-performance MOFs-based electrocatalysts for CO2 reduction.

关键词： Metal organic framework Electrocatalyst Carbon dioxides Reduction reaction Nanomaterials

Significantly Improved Stereocomplexation Ability in Cyclic Block Copolymers

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Chinese Journal of Polymer Science 2023年第3期41卷 432-441,I0009页

作者： Qian Zhu Zhi-ping zhou Tong-Fan Hao yi-Jing Nie Research School of Polymeric Materials School of Materials Science and EngineeringJiangsu UniversityZhenjiang 212013China

Stereocomplex crystallization in cyclic polymer blend and cyclic block copolymers was investigated by means of dynamic Monte Carlo *** polymer systems(linear polymer blend,linear diblock copolymer,cyclic polymer blend,cyclic diblock copolymer and tetrablock copolymer)were *** was interestingly found that the cyclic polymer blend exhibited the weakest stereocomplexation ability,while the two cyclic block copolymers showed stronger stereocomplexation ability than the linear diblock *** abnormal improved stereocomplexation ability of the cyclic block copolymers can be attributed to the synergy between the ring chain topology and the block copolymer *** with the linear block copolymers,the ring chain topology confined segmental motions of cyclic polymer chains to smaller regions,and then the segments belonging to the different blocks in the cyclic block copolymers have more chance to contact with each *** this way,the cyclic block copolymers had better miscibility between segments belonging to different types of blocks,leading to the stronger stereocomplexation ability.

关键词： Monte Carlo simulation Stereocomplex crystallization Ring chain topology Cyclic block copolymers

Molecular Dynamics Simulations of Stretch-Induced Crystal Changes in Crystallized Polyethylene/Carbon Nanotubes Nanocomposites

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Chinese Journal of Polymer Science 2023年第9期41卷 1425-1438,I0007页

作者： Yu-Hang zhou Jun Yang Zhi-ping zhou Tong-Fan Hao yi-Jing Nie Research School of Polymeric Materials School of Materials Science and EngineeringJiangsu UniversityZhenjiang212013China

Understanding deformation mechanisms in semi-crystalline polymers during stretching is useful for guiding the processing of highperformance polymer products. In the current work, molecular dynamics simulations were performed to investigate the crystal changes in crystallized polyethylene/carbon nanotube nanocomposites during uniaxial stretching. Both crystal fragmentation and melting occur at low strains. Crystals with small sizes are easier to melt, while those with large sizes would break into smaller crystals. In addition, crystals in interfacial regions are more likely to melt or break due to the orientation motion of carbon nanotubes. It was also found that the recrystallization process is closely related to the stretch-induced orientation of chain segments. After orientation of chain segments along stretching direction is saturated,the recrystallization of highly oriented segments dominates. The current simulation findings are effective complements to the theories of the mechanism of plastic deformation in semicrystalline polymers.

关键词： Molecular dynamics simulation Carbon nanotubes Stretching Melting and recrystallization

Monte Carlo Study of Planar Rotator Model with Weak Dzyaloshinsky-Moriya Interaction

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Communications in Theoretical Physics 2006年第4X期46卷 663-667页

作者： SUN Yun-zhou LIU Hui-ping yi Lin Department of Physics and State Key Laboratory of Laser Technology~ Huazhong University of Science and Technology Wuhan 430074 China

With the help of an improvement Monte Carlo method, the Berezinskii-Kosterlitz-Thouless phase transition arising in two-dimensional planar rotator model with weak Dzyaloshinsky-Moriya （DM） interaction is investigated. The effects of the DM interaction on specific heat, susceptibility, and magnetization are simulated. The critical temperature of transitions is determined by the so-called Binder cumulant and the susceptibility of finite-size scaling. We find that the chiral Z2 symmetry reduced by the DM interactions plays an important role in a two-dimensional XY spin system, typically, the critical temperature is sensitive to weak DM spin couplings.

关键词： Monte Carlo method Berezinskii-Kosterlitz-Thouless phase transition Dzyaloshinsky-Moriya interaction XY model

The Fractional Derivatives of a Fractal Function

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Acta Mathematica Sinica,English Series 2006年第3期22卷 719-722页

作者： Kui YAO Wei yi SU Song ping zhou Department of Mathematics Nanjing University and PLA University of Sci-Tech Department of Mathematics Nanjing University Institute of Mathematics Zhejiang Sci-Tech University

The present paper investigates the fractional derivatives of Weierstrass function, proves that there exists some linear connection between the order of the fractional derivatives and the dimension of the graphs of Wei... 详细信息

关键词： Weierstrass function fractional derivatives dimensions of graphs of functions

A large-grain-size thick-film polycrystalline diamond detector for x-ray detection

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Plasma Science and Technology 2020年第12期22卷 97-103页

作者： ping XU yi YU Haiyang zhou Changjun QIU School of Resources Environment and Safety Engineering University of South ChinaHengyang 421001People's Republic of China School of Physics University of Science and Technology of ChinaHefei 230026People's Republic of China School of Mechanical Engineering University of South ChinaHengyang 421001People's Republic of China

A diamond film with a size of 6×6×0.5 mm^3 is fabricated by electron-assisted chemical vapor deposition. Raman spectrum analysis, x-ray diffraction and scanning electron microscope images confirm the high purity and large grain size, which is larger than 300 μm. Its resistivity is higher than 10^12 W· cm. Interlaced-finger electrodes are imprinted onto the diamond film to develop an x-ray detector. Ohmic contact is confirmed by checking the linearity of its current–voltage curve. The dark current is lower than 0.1 n A under an electric field of 30 k V cm^-1. The time response is 220 ps. The sensitivity is about 125 m A W^-1 under a biasing voltage of 100 V.A good linear radiation dose rate is also confirmed. This diamond detector is used to measure x-ray on a Z-pinch, which has a double-layer 'nested tungsten wire array'. The pronounced peaks in the measured waveform clearly characterize the x-ray bursts, which proves the performance of this diamond detector.

关键词： polycrystalline diamond film x-ray detector electron-assisted chemical vapor deposition