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Cry.tallization,Mechanical,Thermal and Rheological Properties of Poly.ropy.ene Composites Reinforced by.Magnesium Oxy.ulfate Whisker

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Chinese Journal of Poly.er Science 2017年第5期35卷 659-671页

作者： Li Dang Xue-y.ng Nai Xin Liu dong-hai Zhu y.-ping dong 李武 Key.Laboratory.of Salt Lake Resources Chemistry Qinghai Institute of Salt LakesChinese Academy of Sciences Key.Laboratory.of Comprehensive and Highly.Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt Lakes Chinese Academy of Sciences University.of Chinese Academy.of Sciences

Poly.ropy.ene （PP） composites containing magnesium oxy.ulfate whisker （MOSw） or lauric acid （LA） modified MOSw （LAMOSw） were prepared via melt mixing in a torque rheometer. The heterogeneous nucleating effect of LAMOSw was clearly.observed in polarized light microscopy.（PLM） pictures with the presence of an abundance of small spherulites. MOSw exhibited no nucleation effect and formed a few spherulites with large size. Compared with PP/MOSw composites, PP/LAMOSw exhibited better impact strength, tensile strength and nominal strain at break, ascribing to three possible reasons：（i） more β-cry.tal PP formed, （ii） better dispersity.of LAMOSw in PP matrix and （iii） the plasticizing effect of LA. The results of dy.amic mechanical thermal analy.is （DMTA） indicated that brittleness of the PP matrix at low temperature was improved by.the addition of LAMOSw, while the interracial interactions between MOSw and PP matrix were actually.weakened by.LA, as evidenced by.the higher tan8 values over the entire range of test temperatures. In terms of the rheological properties of the composites, both the η＊ and G＇ at low frequencies increase with the addition of MOSw or LAMOSw, indicating that the PP matrix was transformed from liquid-like to solid-like. However, a network of whiskers did not form because no plateau was found in the G＇ at low frequencies. With low filler content, LAMOSw produced a stronger solid-like behavior than MOSw mainly.due to the better dispersion of the LAMOSw in PP matrix. However, for highly.filled composites, the η＊ of PP/LAMOSw at low frequencies was smaller than that of PP/MOSw composite, since the particle- particle contact effect play.d a major role.

关键词： PP/MOSw composites Cry.tallization Thermal properties Mechanical properties Rheological properties

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High-resolution imaging through dy.amic scattering media: Iterative optimization based on polarimetric characteristics

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Science China Technological Sciences 2025年第1期 82-84页

作者： Meng XIANG Kai DENG Tiany. WANG Jinpeng LIU Xue dong Teli XI Fei LIU Xiaopeng SHAO School of Optoelectronic Engineering Xidian University Xi'an Key.Laboratory.of Computational Imaging National Key.Laboratory.of Infrared Detection Technologies

High-resolution imaging through randomly.dy.amic scattered fields and highly.scattered walls is an extensively.sought-after capability.with potential applications in various fields such as underwater imaging, biomedical imaging, and seeing through fog. Numerous methods have been proposed to unscramble object information from degraded scattered images, resulting in considerable improvements in image contrast in degraded scenarios [1].

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A Galaxy.Image Augmentation Method Based on Few-shot Learning and Generative Adversarial Networks

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Research in Astronomy.and Astrophy.ics 2024年第3期24卷 180-193页

作者： y.qi y.o Jinqu Zhang ping Du Shuy. dong School of Artificial Intelligence South China Normal UniversityFoshan 528225China School of Computer Science South China Normal UniversityGuangzhou 510631China Guangdong Construction Vocational Technology.Institute Guangzhou 511500China

Galaxy.morphology.classifications based on machine learning are a ty.ical technique to handle enormous amounts of astronomical observation data,but the key.challenge is how to provide enough training data for the machine learning *** this article proposes an image data augmentation method that combines few-shot learning and generative adversarial *** Galaxy.0 DECaLs data set is selected for the experiments with consistency.variance,and augmentation effects being *** popular networks,including AlexNet,VGG,and ResNet,are used as examples to study.the effectiveness of different augmentation methods on galaxy.morphology.*** results show that the proposed method can generate galaxy.images and can be used for expanding the classification model’s training *** to comparative studies,the best enhancement effect on model performance is obtained by.generating a data set that is 0.5–1 time larger than the original data ***,different augmentation strategies have considerably.varied effects on different ty.es of ***-GAN achieved the best classification performance on the ResNet network for In-between Round Smooth Galaxies and Unbarred Loose Spiral Galaxies,with F1 Scores of 89.54%and 63.18%,*** comparison reveals that various data augmentation techniques have varied effects on different categories of galaxy.morphology.and machine learning ***,the best augmentation strategies for each galaxy.category.are suggested.

关键词： techniques image processing-galaxies structure-galaxies general

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Preparation and characterization of oil-soluble In_2O_3 nanoparticles and In_2O_3–SnO_2 nanocomposites and their calcined thin films

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International Journal of Minerals,Metallurgy.and Materials 2015年第5期22卷 543-548页

作者： Li-ping Wang Xu-dong Xu Jia-xing Wang Department of Materials Phy.ics and Chemistry School of Materials Science and Engineering University of Science and Technology Beijing

Oil-soluble In2O3 nanoparticles and In2O3-SnO2 nanocomposites were prepared in oley.amine via decomposition of metal acety. lacetonate precursors. Thin films of In2O3 and In2O3-SnO2 were obtained by.spin-coating solutions of the oil-soluble In2O3 nanoparticles and In2O3-SnO2 nanocomposites onto substrates and then calcining them. Transmission electron microspectroscopy. scanning electron mi- crospectroscopy. atomic force microspectroscopy. X-ray.diffraction, ultraviolet-visible absorption, and photoluminescence spectroscopy.were used to investigate the properties of the nanoparticles and thin films. The In2O3 nanoparticles were cubic-phased spheres with a diame- ter of-8 nm; their spectra exhibited a broad emission peak centered at 348 nm. The In2O3-SnO2 nanocomposites were co-particles composed of smaller In2O3 particles and larger SnO2 particles; their spectra exhibited a broad emission peak at 355 nm. After the In2O3-SnO2 nano- composites were calcined at 400℃, the obtained thin films were highly.transparent and conductive, with a thickness of 30-40 nm; the sur- faces of the thin films were smooth and crack-free.

关键词： indium trioxide tin dioxide nanoparficles nanocomposites thin films calcination

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Overall-Transparent Dy.amic Identifier-Mapping Mechanism Against Scanning and Worm Propagation in the SINET

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China Communications 2020年第5期17卷 137-150页

作者： Liny.an y.o ping dong Hongke Zhang Xiaojun Wang China Academy.of Electronics and Information Technology Beijing 100041China School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing 100044China School of Electronic Engineering Dublin City UniversityDublin 43016Ireland

Static assignment of IP addresses or identifiers can be exploited by.an adversary.to attack a network. However, existing dy.amic IP address assignment approaches suffer from two limitations, namely. participation of terminals in the assignment and inadequate network server management. Thus, in this paper, we propose an Overall-transparent Dy.amic Identifier-mapping Mechanism(ODIM) to manage the identifier of network nodes to defend against scanning and worm propagation in the Smart Identifier NETwork(SINET). We establish the selection and allocation constraints, and present selection and allocation algorithms to determine the constraints. The non-repetition probability.and cover cy.le allow us to evaluate the defense efficiency.against scanning. We propose the probability.for routing identifiers and derive the defense efficiency.of ODIM against worm propagation. Simulation results and theoretical analy.is show that the proposed method effectively.reduces the detection probability.of Routing IDentifiers(RIDs) and thus improves defense capabilities against worm propagation.

关键词： dy.amic identifier-mapping network scanning worm propagation smart identifier network

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Free Boundary.Problems with Local-nonlocal Diffusions and Different Free Boundaries Ⅰ: Global Solution

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Acta Mathematica Sinica,English Series 2022年第12期38卷 2265-2284页

作者： Xiu dong Jian ping WANG Ming Xin WANG School of Mathematics Harbin Institute of TechnologyHarbin 150001P.R.China School of Applied Mathematics Xiamen University of TechnologyXiamen 361024P.R.China School of Mathematics and Information Science Henan Polytechnic UniversityJiaozuo 454000P.R.China

We investigate a class of ecological models with local-nonlocal diffusions and different free *** is PartⅠof a two-part series,in which the existence,uniqueness,regularity.and estimates of global solution is *** spreading-vanishing dichotomy.criteria governing spreading and vanishing,long-time behavior of solution and the estimation of the spreading speed when spreading happens will be studied in the separate PartⅡ.

关键词： Local-nonlocal diffusions different free boundaries existence-uniqueness global solution

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Adaptive control of track tension estimation using radial basis function neural network

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Defence Technology.防务技术） 2021年第4期17卷 1423-1433页

作者： ping-xin Wang Xiao-ting Rui Hai-long y. Guo-ping Wang dong-y.ng Chen Institute of Launch Dy.amics Nanjing University of Science and TechnologyNanjing210094China College of Electrical Energy and Power EngineeringYangzhou UniversityYangzhou225000China

Track tension is a major factor influencing the reliability.of a *** order to reduce the risk of track peel-off,it is necessary.to keep track tension ***,it is difficult to measure the dy.amic tension during off-road *** on the analy.is of the relation and external forces depending on free body.diagrams of the idler,idler arm,road wheel and road arm,a theoretical estimation model of track tension is *** estimation results with multibody.dy.amics simulation results,the rationality.of track tension monitor is *** the aid of this monitor,a track tension control sy.tem is designed,which includes a self-tuning proportional-integral-derivative(PID)controller based on radial basis function neural network,an electro-hy.raulic servo sy.tem and an idler *** tightness of track can be adjusted by.turning the idler *** results of the vehicle starting process indicate that the controller can reach different expected tensions quickly.and *** with a traditional PID controller,the proposed controller has a stronger anti-disturbance ability.by.amending control parameters online.

关键词： Track tension Monitor Multibody.dy.amics Neural network Anti-disturbance ability

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Generation of Multi-ion Graph States with Trapped Ions in Thermal Motion

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Communications in Theoretical Phy.ics 2008年第9期50卷 640-642页

作者： WANG Xian-ping dong ping y.NG Ming CAO Zhuo-Liang Key.Laboratory.of Opto-electronic Information Acquisition and Manipulation Ministry of Education School of Physics and Material Science Anhui University Hefei 230039 China Department of Phy.ics Hefei Teachers College Hefei 230061 China

We propose a scheme for generating multi-ion graph states using many.trapped ions in thermal *** generation scheme is insensitive to external state since the interaction between ions and laser fields does not involvet... 详细信息

关键词： multi-ion graph state trapped-ion sy.tem thermal motion

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DFT Studies on Non-IPR C_(68) and Endohedral Fullerene Sc_3N@C_(68)

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Chinese Journal of Structural Chemistry 2007年第3期26卷 321-327页

作者： WANG dong-Lai SUN Xiao-ping ZHAI y.-Chun College of Materials and Metallurgy Northeastern University Shenyang 110004 China Department of Chemistry Anshan Teachers College Anshan 114005 China

Density.functional theory.（DFT） calculations on two isomers of C68 with the minimal number of fused pentagon pairs, its anions and Sc3N as well as Sc3N@C68 （6140） metallofullerene were carded out at the B3Ly./6-31G^＊ level. The optimized configurations and electrostatic potential distributions have been obtained. The calculated results show that the electrostatic potentials of C68 （6140） inside the sphere have three minima in the middle of the double bonds at fusion of two hexagonal rings. In contrast, potential minimum Vmin（r） of C68 （6275） inside the sphere occurs at the center of the sphere. Concerning the two isomers of C68, the largest regions with the most negative MEP outside the sphere are both localized in the neighborhood of pentagon-pentagon vertex fusions. They.constitute the most probable active sites in chemical reactions. Our results present a reasonable explanation for the bonding between scandium atoms and fullerene cage.

关键词： C68 fullerene metallofullerene electrostatic potential bonding

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STCANet:Spatiotemporal Coupled Attention Network for Ocean Surface Current Prediction

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Journal of Ocean University.of China 2023年第2期22卷 441-451页

作者： XIE Cui CHEN ping MAN Tenghao dong Juny. School of Computer Science and Technology Ocean University of ChinaQingdao 266100China

Currently.numerical models based on idealized assumptions,complex algorithms and high computational costs are unsatisfactory.for ocean surface current ***,the complex temporal and spatial variability.of ocean currents also makes the prediction methods based on time series data *** deep network model can automatically.learn and extract complex features hidden in large amount of complex data,so it is a promising method for high quality.prediction of ocean *** this paper,we propose a spatiotemporal coupled attention deep network model STCANet that can extract abundant temporal and spatial coupling information on the behavior characteristics of ocean currents for improving the prediction ***,Spatial Module is designed and implemented to extract the spatiotemporal coupling characteristics of ocean currents,and meanwhile the spatial correlations and dependencies among adjacent sea areas are obtained through Spatial Channel Attention Module(SCAM).Secondly.we use the GatedRecurrent-Unit(GRU)to extract temporal relationships of ocean currents,and design and implement the nearest neighbor time attention module to extract the interdependences of ocean currents between adjacent times,which can further improve the accuracy.of ocean current ***,a series of comparative experiments on the MediSea_Dataset and EastSea_Dataset showed that the prediction quality.of our model greatly.outperforms those of other benchmark models such as History.Average(HA),Autoregressive Integrated Moving Average Model(ARIMA),Long Short-term Memory.LSTM),Gate Recurrent Unit(GRU)and CNN_GRU.

关键词： ocean surface current prediction spatiotemporal coupling features deep learning attention mechanism

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