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Acta Oceanologica Sinica 2021年第1期40卷 162-172页

作者： Lei zhu Xiaodong Chen Zhimo Wu School of Marine Science Sun Yat-sen UniversityGuangzhou 510275China Southern Marine Science and Engineering Guangdong Laboratory(zhuhai) Zhuhai 519090China

The exchange flow structure was examined in the North Passage of Changjiang River Estuary,where a deep waterway project(DWP)was carried out to improve the *** the construction of the DWP,the friction effect played a significant role in shaping the transverse structure of the exchange *** turbulent eddy viscosity generated near the seabed can be transferred to the upper water column,which facilitated vertical momentum *** a result,the landward inflow extended to–2 m below the water surface and the seaward outflow was concentrated on the shallow shoal on the southern side of the cross *** the construction of the DWP,the turbulent mixing was suppressed as a result of density *** friction felt by the water was constrained in the lower half of the water column and the vertical momentum exchange was ***,the channel became dynamically narrowed with a Kelvin number of ***,the Coriolis played a minor role in shaping the transverse structure of the exchange *** a consequence,the exchange flow featured a vertically-sheared pattern,with outflow at the surface and inflow ***,the gravitational circulation was enhanced due to increase in along-channel density gradient and *** exchange flow components associated with the lateral processes(residual currents induced by eddy viscosityshear covariance and lateral advective acceleration)were reduced,which suggests that lateral processes played a minor role in modifying the along-channel dynamics when the estuary becomes dynamically-narrowed.

关键词： exchange flow stratification lateral circulation Changjiang River Estuary

A new approach for inversion of receiver function for crustal structure in the depth domain

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Earth and Planetary Physics 2022年第1期6卷 83-95页

作者： TianYu Zheng YuMei He Yue zhu Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of Sciences(CAS)Beijing 100029China University of Chinese Academy of Sciences Beijing 100049China

A method for reconstructing crustal velocity structure using the optimization of stacking receiver function amplitude in the depth domain,named common conversion amplitude(CCA)inversion,is *** conversion amplitude in the depth domain,which represents the impedance change in the medium,is obtained by assigning the receiver function amplitude to the corresponding conversion position where the P-to-S conversion *** the conversion amplitude variation with depth as an optimization objective,imposing reliable prior constraints on the structural model frame and velocity range,and adopting a stepwise search inversion technique,this method efficiently weakens the tendency of easily falling into the local extremum in conventional receiver function *** tests show that the CCA inversion can reconstruct complex crustal velocity structures well and is especially suitable for revealing crustal evolution by estimating diverse velocity *** performance in reconstructing crustal structure is superior to that of the conventional receiver function imaging method.

关键词： crustal imaging receiver function depth domain inversion

Two-Dimensional Cathode Materials for Aqueous Rechargeable Zinc-Ion Batteries

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Chinese Journal of Chemistry 2022年第8期40卷 973-988页

作者： Yurou Wang Jun Yin Jian zhu School of Materials Science and Engineering Nankai UniversityTianjin 300350China

Rechargeable aqueous zinc-ion batteries(ZIBs)featuring low cost,superior performance,and environmental benignity have attracted dramatic atten-tion as a promising alternative energy storage system to lithium-ion ***,the development of ZIBs is still hindered by the limited selection of cathode materials due to the large solvation sheath and charge density of Zn^(2+).Two-dimensional(2D)materials have attracted extraor-dinary attention owing to the unique layered structure bonded by weak van der Waals'forces,which makes them promising host materials for Zn^(2+)intercalation/*** this review,the synthesis and properties of 2D materials for cathodes in ZIBs are ***,various re-ports on 2D materials as ZIBs cathodes are *** key strategies to elicit improved Zn2+storage abilities:defect engineering,hetero-structure engineering,and interlayer engineering,are ***,this review ends with perspectives relating to the challenges and opportu-nities of 2D materials-based ZIBs.

关键词： Two-dimensional materials Zinc-ion batteries Electrochemistry Nanostructures Energy conversion

Quantitative evaluation of organic richness from correlation of well logs and geochemical data: a case study of the Lower Permian Taiyuan shales in the southern North China Basin

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Frontiers of Earth Science 2021年第2期15卷 360-377页

作者： Shuai TANG Jinchuan ZHANG Weiyao zhu Civil and Resource Engineering School University of Science and Technology BeijingBeijing 100083China School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China

Marine-continental transitional shale is a potential energy component in China and is expected to be a realistic field in terms of increasing reserves and enhancing the natural gas ***,the complex lithology,constantly changing depositional environment and lithofacies make the quantitative determination of the total organic carbon(TOC)suitable for marine shales not necessarily applicable to transitional ***,the identification of marine-continental transitional organic-rich shales and the mechanism of organic matter enrichment need to be further *** a typical representative of transitional shale,samples from Well MY-1 in the Taiyuan Formation in the southern North China Basin,were selected for TOC prediction using a combination of experimental organic geochemical data and well logging data including natural gamma-ray(GR),density(DEN),acoustic(AC),neutron(CNL)and U spectral gamma-ray(U),and TH spectral gamma-ray(TH).The correlation coefficient,coefficient of determination,standard deviation,mean squared error(MSE)and root mean squared error(RMSE)were selected to conduct the error analysis of the evaluation of different well log-based prediction methods,involving U spectral gamma logging,ΔlogR,and multivariate fitting methods to obtain the optimal TOC prediction method for the Taiyuan transitional *** plots of TOC versus the remaining volatile hydrocarbon content and the generation potential from Rock Eval show good to excellent potentials for hydrocarbon *** integrated results obtained from the various log-based TOC estimation methods indicate that,the multivariate fitting method of GR-U-DEN-CNL combination is preferable,with the correlation coefficients of 0.78 and 0.97 for the entire and objective interval of the Taiyuan Formation respectively,and with the minimum MSE and RMSE ***,the U spectral gamma logging method based on single logging parameter is also a better choice for TOC prediction of the high-q

关键词： marine-continental transitional shales total organic carbon thermal maturity well logs

Modeling pipe-soil interaction under vertical downward relative offset using B-spline material point method

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第6期15卷 1520-1534页

作者： Chunxin Zhang honghu zhu Haojie Li School of Earth Sciences and Engineering Nanjing UniversityNanjing210023China Institute of Earth Exploration and Sensing Nanjing UniversityNanjing210023China

To analyze the pipeline response under permanent ground deformation,the evolution of resistance acting on the pipe during the vertical downward offset is an essential ***,the efficient simulation of pipe penetration into soil is challenging for the conventional finite element(FE)method due to the large deformation of the surrounding *** this study,the B-spline material point method(MPM)is employed to investigate the pipe-soil interaction during the downward movement of rigid pipes buried in medium and dense *** describe the density-and stress-dependent behaviors of sand,the J2-deformation type model with state-dependent dilatancy is *** effectiveness of the model is demonstrated by element tests and biaxial compression ***,the pipe penetration process is simulated,and the numerical outcomes are compared with the physical model *** effects of pipe size and burial depth are investigated with an emphasis on the mobilization of the soil resistance and the failure *** simulation results indicate that the bearing capacity formulas given in the guidelines can provide essentially reasonable estimates for the ultimate force acting on buried pipes,and the recommended value of yield displacement may be underestimated to a certain extent.

关键词： Pipe-soil interaction Material point method(MPM) Large ground deformation Failure mechanism Downward movement

Mobile Coded Caching in Small Cell Networks:Algorithm Design and Performance Analysis

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China Communications 2023年第6期20卷 82-99页

作者： Guangyu zhu Caili Guo Tiankui Zhang School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China

In coded caching,users cache pieces of files under a specific arrangement so that the server can satisfy their requests simultaneously in the broadcast scenario via e Xclusive OR(XOR)operation and therefore reduce the amount of transmission ***,when users’locations are changing,the uploading of caching information is frequent and extensive that the traffic increase outweighed the traffic reduction that the traditional coded caching *** this paper,we propose mobile coded caching schemes to reduce network traffic in mobility scenarios,which achieve a lower cost on caching information *** the cache placement phase,the proposed scheme first constructs caching patterns,and then assigns the caching patterns to users according to the graph coloring method and four color theorem in our centralized cache placement algorithm or randomly in our decentralized cache placement *** users are divided into groups based on their caching *** a benefit,when user movements occur,the types of caching pattern,rather than the whole caching information of which file pieces are cached,are *** the content delivery phase,XOR coded caching messages are *** data volume is derived to measure the performance of the proposed *** results show that the proposed schemes achieve great improvement in traffic offloading.

关键词： coded caching mobility small-cell networks

Cryptanalysis and Improvement of a Quantum Secret Sharing Protocol between Multiparty and Multiparty with Single Photons and Unitary Transformations

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Chinese Physics Letters 2010年第6期27卷 13-15页

作者： zhu Zhen-Chao ZHANG Yu-Qing Key Lab of Computer Networks and Information Security of Ministry of Education Xidian University Xi'an 710071 National Computer Network Intrusion Protection Center Graduate University Chinese Academy of Sciences Beijing 100049

In a recent paper [Chin. Phys. Lett 25（2008）1187], a quantum secret sharing scheme between multiparty and multiparty was presented. We show that the protocol is not secure because the last member in Alice＇s group can illegally obtain most secret messages without introducing any error. Finally, a possible way to avoid the security flaw is suggested.

关键词： CRYPTOGRAPHY QUANTUM communication UNITARY transformations ERROR analysis (Mathematics) SECURITY systems

Toward Human-centered XAIin Practice:A survey

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Machine Intelligence Research 2024年第4期21卷 740-770页

作者： Xiangwei Kong Shujie Liu Luhao zhu Department of Data Science and Management Engineering School of ManagementZhejiang UniversityHangzhou 310058China

Human adoption of artificial intelligence(AI)technique is largely hampered because of the increasing complexity and opacity of AI *** AI(XAI)techniques with various methods and tools have been developed to bridge this gap between high-performance black-box AI models and human ***,the current adoption of XAI technique stil lacks"human-centered"guidance for designing proper solutions to meet different stakeholders'needs in XAI *** first summarize a human-centered demand framework to categorize different stakeholders into five key roles with specific demands by reviewing existing research and then extract six commonly used human-centered XAI evaluation measures which are helpful for validating the effect of *** addition,a taxonomy of XAI methods is developed for visual computing with analysis of method *** clearer human demands and XAI methods in mind,we take a medical image diagnosis scenario as an example to present an overview of how extant XAI approaches for visual computing fulfil stakeholders'human-centered demands in *** we check the availability of open-source XAI tools for stakeholders'*** survey provides further guidance for matching diverse human demands with appropriate XAI methods or tools in specific applications with a summary of main challenges and future work toward human-centered XAI in practice.

关键词： Artificial intelligence(AI)application explainable AI(XAI) human-centered design visual computing medical diagnosis.

基于结构光扫描的轴类锻件轴线快速提取（英文）

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机床与液压 2016年第6期44卷 53-56页

作者： Zhi-peng zhu Yan- zhu YANG Yun hong School of Mechanical Engineering Donghua University Shanghai 201600 China

In the online measurement system based on line structured light, the key parameters of work-piece arecontained in point clouds collected from measuring system. According to the process characteristics of shaft free-forging, a method of extracting axis by ellipse fitting is introduced. The precision of axis is important for three-di-mensional reconstruction and key parameters calculation. The feasibility and validity is tested by experiments aswell in this study.

关键词： Axis extraction Structured light Ellipse fitting Least square principle

Salvianolic acid B promotes the invasion and migration of H_(2)O_(2)-induced HTR-8/Svneo trophoblast cells by upregulating matrix metalloproteinase-9 via the phosphatidylinositol-4,5-bisphosphate 3-kinase/protein kinase B pathway

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Journal of Traditional Chinese Medicine 2023年第3期43卷 457-465页

作者： ZHAO Zhiqiang ZHANG Chong zhu Yunxia Department of Gynecology and Obstetrics Beijing You'an Hospital of Capital Medical UniversityBeijing 100069China

OBJECTIVE:To elucidate the regulatory effects of salvianolic acid B(Sal B)on trophoblast cells in preeclampsia(PE).METHODS:3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyltetrazolium bromide(MTT)assays were used to detect the viability of human extravillous trophoblast HTR-8/Svneo cells induced by H_(2)O_(2)following treatment with different concentrations of Sal *** levels of oxidative stressrelated molecules,including superoxide dismutase,glutathione-Px and malondialdehyde were detected using corresponding *** apoptosis was detected using a Terminal deoxynucleotidyl transferase(Td T)d UTP NickEnd Labeling(TUNEL)assay,and the expression of apoptosis-related proteins was detected using western blot *** the present study,wound healing and Transwell assays were performed to measure the levels of cell invasion and *** blot analysis was also used to detect the expression levels of epithelialmesenchymal transition-related *** mechanisms underlying Sal B were further investigated using reverse transcription-quantitative real-time polymerase chain reaction(RT-q PCR)and western blot analysis,to determine the expression levels of matrix metallopeptidase 9(MMP-9)and phosphatidylinositol-4,5-bisphosphate 3-kinase(PI3K)/protein kinase B(Akt).RESULTS:Sal B increased the activity of HTR-8/Svneo cells,inhibited oxidative damage and promoted the invasion and migration of trophoblast cells induced by H_(2)O_(2).Furthermore,the expression levels of MMP-9 and members of the PI3K/Akt signaling pathway were significantly *** pathway agonist,LY294002,and MMP-9 inhibitor,GM6001,reversed the effects of Sal B on H_(2)O_(2)-induced ***:Sal B promoted the invasion and migration of H_(2)O_(2)-induced HTR-8/Svneo trophoblast cells by upregulating MMP-9 via the PI3K/Akt signaling pathway.

关键词： sennosides matrix metallopeptidase 9 phosphatidylinositol 3-kinase protein kinases HTR-8/Svneo trophoblast cell invasion migration