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Ontology-Based Semantic Annotation for Problem Set Archives in the Web

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 63-67页

作者： su Xiang ZHU Guo-jin WANG zong- wei College of Computer Science Donghua University Shanghai 200051 China

Aimming at the difficulty in getting semantic informarton from each problem in problem set archives, We propose a new method of ontology based semantic annotation for problem set archives, which utilizes programming knowledge domain ontology to add semantic annotations to problems in the Web. The system we developed adds semantic annotation for each problem in the form of Extensible Makeup Language. Our method overcomes the difficulty of extracting semantics from problem set archives and the efficiency of this method is demonstrated through a case study. Having semantic annotations of problems, a student can efficiently locate the problems that logically corre spond to his knowledge.

关键词： ontology semantic annotation problem set archive

Maintaining moderate levels of hypochlorous acid promotes neural stem cell proliferation and differentiation in the recovery phase of stroke

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Neural Regeneration Research 2025年第3期20卷 845-857页

作者： Lin-Yan Huang Yi-De Zhang Jie Chen Hai-Di Fan Wan Wang Bin Wang Ju-Yun Ma Peng-Peng Li Hai-wei Pu Xin-Yian Guo Jian-Gang Shen su-Hua Qi School of Medical Technology Xuzhou Key Laboratory of Laboratory DiagnosticsXuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Pharmacy Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Laboratory Medicine Branch Hospital of Huai’an First People’s HospitalHuai’anJiangsu ProvinceChina Department of Laboratory Medicine the Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Chinese Medicine The University of Hong KongHong Kong Special Administrative RegionChina

It has been shown clinically that continuous removal of ischemia/reperfusion-induced reactive oxygen species is not conducive to the recovery of late ***,previous studies have shown that excessive increases in hypochlorous acid after stroke can cause severe damage to brain *** previous studies have found that a small amount of hypochlorous acid still exists in the later stage of stroke,but its specific role and mechanism are currently *** simulate stroke in vivo,a middle cerebral artery occlusion rat model was established,with an oxygen-glucose deprivation/reoxygenation model established in vitro to mimic *** found that in the early stage(within 24 hours)of ischemic stroke,neutrophils produced a large amount of hypochlorous acid,while in the recovery phase(10 days after stroke),microglia were activated and produced a small amount of hypochlorous ***,in acute stroke in rats,hypochlorous acid production was prevented using a hypochlorous acid scavenger,taurine,or myeloperoxidase inhibitor,4-aminobenzoic acid *** results showed that high levels of hypochlorous acid(200μM)induced neuronal apoptosis after oxygen/glucose deprivation/***,in the recovery phase of the middle cerebral artery occlusion model,a moderate level of hypochlorous acid promoted the proliferation and differentiation of neural stem cells into neurons and *** suggests that hypochlorous acid plays different roles at different phases of cerebral ischemia/reperfusion *** levels of hypochlorous acid(5 and 100μM)promoted nuclear translocation ofβ-*** transfection of single-site mutation plasmids,we found that hypochlorous acid induced chlorination of theβ-catenin tyrosine 30 residue,which promoted nuclear ***,our study indicates that maintaining low levels of hypochlorous acid plays a key role in the recovery of neurological function.

关键词： cell differentiation cerebral ischemia/reperfusion injury chlorination hypochlorous acid microglia neural stem cell neurogenesis nuclear translocation stroke β-catenin

DAO媒介:驱动未来社会算法化与自组织的元媒介

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新疆师范大学学报（哲学社会科学版） 2025年第1期46卷 132-141页

作者：喻国明苏健威北京师范大学新闻传播学院北京师范大学传播创新与未来媒体实验平台北京100875

DAO媒介是以区块链算法等技术为基础,支持数字社群协同自治的媒介,具有区块链、智能合约与投票等功能特性和要素确权、技术信任、规则构架以及场景聚合等价值禀赋。对于数字生态显露的各种问题,“算法化”是重构数字生态、降解社会系统... 详细信息

DAO媒介是以区块链算法等技术为基础,支持数字社群协同自治的媒介,具有区块链、智能合约与投票等功能特性和要素确权、技术信任、规则构架以及场景聚合等价值禀赋。对于数字生态显露的各种问题,“算法化”是重构数字生态、降解社会系统复杂性的关键机制,DAO媒介是支撑“自组织式”算法化的元媒介。DAO媒介与数字文明时代喷发的微粒个体、微资源、微价值、微需求、微场景等相匹配,能够深度匹配人的个性与自我,形成有效的趣缘连接,进而极大地释放数字文明的生产力。DAO媒介将深刻影响社会系统的构造,将微粒个体与相关社会要素“包裹”为闭环子系统,支持其准开放的系统边界、有效的异质性整合、可持续的规则重构、子系统与父级系统的持续分化和快速进化,等等。在数字文明时代,DAO媒介将使“重新部落化”的“地球村”变为现实,其驱动构筑的DAO社会将更加多元、更加富有创造力,不断拓展人类群体实践的自由度,使人类在高度异质性聚合基础上更加和谐有序地整合协同。

关键词： DAO 数字媒介算法自组织社会系统

Provenance of Central Canyon in Qiongdongnan Basin as evidenced by detrital zircon U-Pb study of Upper Miocene sandstones

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Science China Earth Sciences 2015年第8期58卷 1337-1349,1-6页

作者： CHEN Hui XIE XiNong GUO JingLiang su Ming zong KeQing SHANG Fei HUANG wei WANG wei SHANG ZhiLei Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education Faculty of ResourcesChina University of Geosciences State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Key Laboratory of Renewable Energy and Gas Hydrate Guangzhou Institute of Energy ConversionChinese Academy of Sciences China National Offshore Oil Corporation Research Institute

Deep-water canyon systems can provide important sandstone reservoirs for deep-water oil and gas exploration in the South China Sea;however,the sedimentary provenance of the Central Canyon in the Qiongdongnan Basin remains *** this work,detrital zircon grains from three drilling sandstones in the Upper Miocene Huangliu Formation in the western part of the Central Canyon were analysed by LA-ICP-MS for U-Pb ages,in order to constrain their *** hundred and ninety-one zircon grains yield concordant U-Pb ages ranging from 28.6 to 3285 *** of them show oscillatory or linear zoning in CL-images and high Th/U ratios(>0.1),suggesting that they are magmatic *** major age clusters at about30 Ma(N=6),220–270 Ma(N=29),and 420–440 Ma(N=13),and five minor age clusters at 70–110 Ma(N=7),150–170 Ma(N=4),800–850 Ma(N=11),1800–2000 Ma(N=16),and 2400–2600 Ma(N=7),can be identified in the age spectrum,which are very similar to those of the Upper Miocene sandstones and modern river sands in the Red River area,but different from those of other nearby regions(e.g.,Hainan Island,the Pearl River area,and the Mekong River area)in Southeast *** major age peak at about 30 Ma in our samples is consistent with the timing of tectonothermal events in the Red River Fault ***,we suggest that the provenance of the western part of the Central Canyon,in the Qiongdongnan Basin,was fed dominantly by the Paleo-Red River system during the Late Miocene.

关键词： Qiongdongnan Basin Central Canyon detrital zircon U-Pb dating LA-ICP-MS sedimentary provenance

Geometrical and electrical optimization of NS-SDBD streamwise plasma heat knife for aircraft anti-icing

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Chinese Journal of Aeronautics 2023年第2期36卷 87-99页

作者： Zhi su Hua LIANG Haohua zong Jun LI Xu FANG Biao wei Jie CHEN weiliang KONG Science and Technology on Plasma Dynamics Laboratory Air Force Engineering UniversityXi'an 710038China Institute of Aero-engine School of Mechanical EngineeringXi'an Jiaotong UniversityXi'an 710049China Northwest Institute of Nuclear Technology Xi'an 710024China The Green Aerotechnics Research Institute Chongqing Jiaotong UniversityChongqing 404100China

Ice accretion on aircraft encountering supercooled water droplets in clouds poses great risks to flight performance and *** the aim of optimizing the newly developed streamwise plasma heat knife method for anti-icing,a parametric investigation is carried out in this *** influence of the detailed voltage profile on the heating effects of a surface Dielectric Barrier Discharge driven by Nanosecond Pulses(NS-SDBD)is investigated,and a comparison of the antiicing performance among different configurations of streamwise plasma heat knife is *** results show that columnar high-temperature regions produced by a multi-streamer discharge appear at small pulse rise time,but become diffuse as the pulse rise time *** optimal pulse rise time exists to provide a wide range and high value of temperature,which is found to be 150 ns for the setup in the present *** influence of the pulse fall time is much weaker than that of the rise *** range and value of the temperature decrease with increasing pulse fall time.A greater pulse width is found to improve the heating effect by increasing the discharge *** a spanwise electrode is placed connecting the streamwise electrodes of the streamwise plasma heat knife at the airfoil leading edge,the anti-icing performance becomes poorer,whereas good performance is achieved when the spanwise electrode is at the edge of the streamwise *** on this,a three-level configuration of the plasma heat knife is proposed,and its anti-icing performance is found to be much better than that of the original configuration.

关键词： Airfoil icing mitigation Dielectric barrier discharge Nanosecond pulse Voltage profile Plasma

Simultaneous determination of fluorine and iodine in urine by ion chromatography with electrochemical pretreatment

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Chinese Chemical Letters 2009年第12期20卷 1483-1486页

作者： Kang Kang Hu wei Xiong Huang Yu Hua su Rong zong Hu Department of Chemistry College of Chemistry and Chemical Engineering and The Key Laboratory of Analytical Sciences of the Ministry of Education Xiamen University Xiamen 361005 China

A new method for the simultaneous determination of fluorine and iodine in urine by ion chromatography （IC） with electrochemical pretreatment has been developed. The pretreatment was performed in a novel electrochemical oxidationneutralization device （EOND）, in which iodide of the sample was oxidized to iodate and the alkaline digestion sample solution was neutralized. Under the optimized conditions, the limits of detection （LOD, S/N = 3） were 2.5 μg/L for fluoride and 20 μg/L for iodate, respectively. The recoveries were in the range of 93-102% for fluoride and 86-98% for iodate.

关键词： Fluorine Iodine Urine Electrochemical pretreatment Ion chromatography

Perfect Adaptation of General Nonlinear Systems

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Journal of Systems Science & Complexity 2016年第1期29卷 61-73页

作者： su wei The Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of Sciences

Perfect adaptation describes the ability of a biological system to restore its biological function precisely to the pre-perturbation level after being affected by the environmental ***,a biological system with perfect adaptation can be modelled as an input-output nonlinear system whose output,usually determining the biological function,is asymptotically stable under all input disturbances *** this paper,a quite general input-output mathematical model is employed and the 'functional' of biological function(FBF)- output Lyapunov function- is explored to investigate its perfect adaptation *** condition is established for the systems with FBF to achieve perfect *** a sufficient and necessary condition is obtained for the linear systems to possess an output Lyapunov ***,it is shown that the 'functional'of receptors activity exists in the perfect adaptation model of *** *** with the existing mathematical surveys on perfect adaptation,most of which are based on the standpoint of control theory,we first investigate this problem using ways of nonlinear systems analysis.

关键词： Output Lyapunov function perfect adaptation perturbed nonlinear systems

Development of an integrated dynamic model for supply security and resilience analysis of natural gas pipeline network systems

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Petroleum Science 2022年第2期19卷 761-773页

作者： Huai su Enrico Zio zong-Jie Zhang Chang-Zheng Xiong Qian-Sheng Dai Qing-wei Wu Jin-Jun Zhang National Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum Engineering/Beijing Key Laboratory of Urban Oil and Gas Distribution Technology China University of Petroleum-Beijing102249BeijingChina Dipartimento di Energia Politecnico di MilanoVia La Masa 3420156MilanoItaly MINES ParisTech PSL Research UniversityCRCSophiaAntipolisFrance PipeChina West East Gas Pipeline Company Dongfushan Road 458Pudong District200122ShanghaiChina China Special Equipment Inspection and Research Institute Heping Street 2Chaoyang District100013BeijingChina

An integrated dynamic model of natural gas pipeline networks is developed in this *** for gas supply,e.g.,pipelines,junctions,compressor stations,LNG terminals,regulation stations and gas storage facilities are included in the *** components are firstly modeled with respect to their properties and functions and,then,integrated at the system level by Graph *** model can be used for simulating the system response in different scenarios of operation,and evaluate the consequences from the perspectives of supply security and resilience.A case study is considered to evaluate the accuracy of the model by benchmarking its results against those from literature and the software Pipeline ***,the model is applied on a relatively complex natural gas pipeline network and the results are analyzed in detail from the supply security and resilience points of *** main contributions of the paper are:firstly,a novel model of a complex gas pipeline network is proposed as a dynamic state-space model at system level;a method,based on the dynamic model,is proposed to analyze the security and resilience of supply from a system perspective.

关键词： Natural gas pipeline networks Dynamic modeling State space model Graph theory Resilience of natural gas supply

Simulation of the plasticizing behavior of composite modified doublebase(CMDB)propellant in grooved calendar based on adaptive grid technology

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Defence Technology（防务技术） 2021年第6期17卷 1954-1966页

作者： su-wei Wang Xiu-duo Song zong-kai Wu Lei Xiao Guang-pu Zhang Yu-bing Hu Ga-zi Hao wei Jiang Feng-qi Zhao National Special superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing210094China Xi'an Modern Chemistry Research Institute Xi'an710065China

The frequent occurrence of safety accidents during the calendering process is caused by the flammable and explosive properties of composite modified double-base(CMDB)*** of process parameters with the aid of fluid simulation technology could effectively ensure the safety of the calendering *** improve the accuracy of the simulation results,material parameters and model structure were corrected based on actual conditions,and adaptive grid technology was applied in the local mesh *** addition,the rheological behavior,motion trajectories and heat transfer mechanisms of CMDB propellant slurry were studied with different gaps,rotational rates and temperatures of two *** results indicated that the refined mesh could significantly improve the contour clarity of boundaries and simulate the characteristics of CMDB propellant slurry reflux movement caused by the convergent flow near the *** with the gap,the increased rotational rate of roller could promote the reflux movement and intensify the shear flow of slurry inside the flow region by viscous shear ***,under the synergistic effect of contact heat transfer as well as convective heat exchange,heat accumulated near the outlet and diffused along the reflux movement,which led to the countercurrent heat dissipation behavior of CMDB propellant *** plasticizing mechanism of slurry and the safety of calendering under different conditions were explored,which provided theoretical guidance and reference data for the optimization of calendering process *** on the simulation results,the safety of the CMDB propellant calendering process could be significantly improved with a few tests conducted during a short research and development cycle.

关键词： Composite modified double base propellant Calendering process Fluid simulation Vortex flow0