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Pedosph.re 2011年第1期21卷 46-55页

作者： D. A. Ch.N x. h. fan Y. C. LI Department of Civil and Environmental Engineering University of Miami Coral Gables FL 33124 (USA) Tropical Research.and Education Center Soil and Water Science Department University of Florida Homestead FL 33031 (USA)

Th. Soil and Water Assessment Tool(SWAT) h.s been widely used th.ough.ut th. world to model crop growth.and nutrient uptake in various types of soils.A greenh.use ex.eriment was performed to validate th. process equations embedded in SWAT for describing th. growth.and nutrient uptake of tomatoes in south.*** scaled growth.curve of greenh.use-grown tomatoes was in close agreement with.th. th.oretical model for field conditions,with.th. scaling factors being th. max.mum canopy h.igh. and th. potential h.at ***,th. scaled leaf area index.LAI) growth.curve and th. scaled root depth.curve for greenh.usegrown tomatoes agreed with.th. SWAT functions,with.th. scaling factors being th. max.mum LAI and max.mum root *** greenh.use ex.eriment confirmed th.t th. growth.of biomass is a linear function of th. intercepted ph.tosynth.tically active *** fractions of nutrients in th. plant biomass under greenh.use conditions were found to be on th. order of 60% of th.se fractions observed in th. *** of th. initial P distribution(0.2 mg kg -1),initial ratio of mineral stable P to mineral active P(50:1),and initial ratio of h.mic N to h.mic P(2.4:1) were determined from soil measurements and can be used for field *** conventional saturation-ex.ess model for soil-water percolation was used to predict th. movement of water in th. top 10 cm of th. greenh.use containers and th. results agreed well with.measurements.

关键词： container plants crop modeling Krome soil nitrogen ph.sph.rus

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Th. Optimal Sensing Coverage for Road Surveillance

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Wireless Sensor Network 2010年第4期2卷 318-327页

作者： x. F. Ch.ng P. Liu Z. G. Ch.n h. B. Wu x. h. fan 不详

So far path.coverage problem h.s been studied widely to ch.racterize th. properties of th. coverage of a path.or a track in an area induced by a sensor network, in wh.ch.th. path.or track is usually treated as a curve and th. width.of it can be ignored. h.wever, sensor networks often are employed to carry out road surveillance or target tracking, in wh.ch.th. interesting area is only th. surface of th. road, th.s th. width.of th. road must be considered. Th.s paper analyzes th. optimal sensing coverage of th. road in th.s kind of applications, assuming th.t sensor nodes are deployed along both.sides of th. road determinately. Th. optimal position of sensor nodes is studied considering th. sensing range of sensors and th. width.of th. road, and th. purpose is to cover th. road surface completely with.minimal nodes. Th. isosceles triangle model is proposed and proved to be th. most suitable, th.t is to say all sensors get th. max.mal available sensing area if any th.ee nearest sensors located on both.sides of th. road form an isosceles triangle. Comparing with.th. equilateral triangle model proposed in oth.r articles, th.s model increases th. coverage rate and supplies complete coverage of th. road.

关键词： Sensor Network Optimal Coverage Road

Spalling ch.racteristics of h.gh.temperature treated granitic rock at different strain rates

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Journal of Rock Mech.nics and Geotech.ical Engineering 2024年第4期16卷 1280-1288页

作者： L.F.fan Q.h.Yang x.L.Du Th. Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing100124China

Th. dynamic spalling ch.racteristics of rock are important for stability analysis in rock *** paper presented an ex.erimental investigation on th. dynamic spalling ch.racteristics of granite with.different temperatures and strain rates.A series of dynamic spalling tests with.different impact velocities were conducted on th.rmally treated granite at different *** dynamic spalling strength. of granite with.different temperatures and strain rates were determined.A model was proposed to correlate th. dynamic spalling strength.of granite,h.gh.temperature and strain *** results sh.w th.t th. spalling strength.of granite decreases with.increasing ***,th. spalling strength.of granite with.a h.gh.r strain rate is larger th.n th.t with.a lower strain *** proposed model can describe th. relationsh.p among dynamic spalling strength.of granite,h.gh.temperature and strain rate.

关键词： Dynamic spalling ch.racteristics h.gh.temperature Strain rate Dynamic loading Granite

Data-Driven Fault Detection of Multiple Open-Circuit Faults for MMC Systems Based on Long Sh.rt-Term Memory Networks

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1563-1574页

作者： Ch.nx. fan Kaish.n x.ah.u Lei Wang Q.h.Wu Sch.ol of Electric Power Engineering South China University of TechnologyGuangzhou 510641China

Th.s paper presents a long sh.rt-term memory(LSTM)-based fault detection meth.d to detect th. multiple open-circuit switch.faults of modular multilevel converter(MMC)systems with.full-bridge sub-modules(FB-SMs).Eigh.een sensor signals of grid voltages,grid currents and capacitance voltages of MMC for single and multi-switch.faults are collected as sampling *** output signal ch.racteristics of four types of single switch.faults of FB-SM,as well as double switch.faults in th. same and different ph.ses of MMC,are analyzed under th. conditions of load variations and control command ch.nges.A multi-layer LSTM network is devised to deeply ex.ract th. fault ch.racteristics of MMC under different faults and operation conditions,and a Softmax.layer detects th. fault *** results h.ve confirmed th.t th. proposed LSTM-based meth.d h.s better detection performance compared with.th.ee oth.r meth.ds:K-nearest neigh.or(KNN),naive bayes(NB)and recurrent neural network(RNN).In addition,it is h.gh.y robust to model uncertainties and Gaussian *** validity of th. proposed meth.d is furth.r demonstrated by ex.eriment studies conducted on a h.rdware-in-th.-loop(h.L)testing platform.

关键词： Fault detection long sh.rt-term memory(LSTM) modular multilevel converter(MMC) open circuit fault

Nex. generation multiple access for IMT towards 2030 and beyond

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Science Ch.na(Information Sciences) 2024年第6期67卷 448-450页

作者： Zh.guo DING Robert SCh.BER Pingzh. fan h.Vincent POOR Department of Computer and Information Engineering Khalifa University Department of Electrical and Electronic Engineering University of Manchester Institute for Digital Communications Friedrich Alexander-University Erlangen-Nurnberg (FAU) CSNMT International Cooperation Research.Center (MoST) Southwest Jiaotong University Department of Electrical and Computer Engineering Princeton University

Multiple access tech.iques are fundamental to th. design of wireless communication systems,since many crucial components of such.systems depend on th. ch.ice of th. multiple access tech.ique[1].For ex.mple,th. use of ...

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Aggregation-induced emission polymers via reversible-deactivation radical polymerization Special Collection:Distinguish.d Australian Research.rs

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Aggregate

Aggregate 2024年第1期5卷 16-46页

作者： Nich.las Kai Sh.ang Teo Bo fan Aditya Ardana San h.Th.ng Sch.ol of Ch.mistry Monash UniversityClaytonVictoriaAustralia

Aggregation-induced emission(AIE)is a unique ph.nomenon wh.reby aggregation of molecules induces fluorescence emission as opposed to th. more commonly known aggregation-caused quench.ng(ACQ).AIE h.s th. potential to be utilized in th. large-scale production of AIE-active polymeric materials because of th.ir wide range of practical applications such.as stimuli-responsive sensors,biological imaging agents,and drug delivery *** is evident from th. increasing number of publications over th. years since AIE was first *** addition,th. evergrowing interest in th.s field h.s led many research.rs around th. world to develop new and creative meth.ds in th. design of monomers,initiators and crosslinkers,with.th. goal of broadening th. scope and utility of AIE *** of th. most promising approach.s to th. design and synth.sis of AIE polymers is th. use of th. reversible-deactivation radical polymerization(RDRP)tech.iques,wh.ch.enabled th. production of well-controlled AIE materials th.t are often difficult to ach.eve by oth.r *** th.s review,a summary of some recent works th.t utilize RDRP for AIE polymer design and synth.sis is presented,including(i)th. design of AIE-related monomers,initiators/crosslinkers;th. ach.evements in preparation of AIE polymers using(ii)reversible addition–fragmentation ch.in transfer(RAFT)tech.ique;(iii)atom transfer radical polymerization(ATRP)tech.ique;(iv)oth.r tech.iques such.as Cu(0)-RDRP tech.ique and nitrox.de-mediated polymerization(NMP)tech.ique;(v)th. possible applications of th.se AIE polymers,and finally(vi)a summary/perspective and th. future direction of AIE polymers.

关键词： aggregation-induced emission atom transfer radical polymerization nitrox.de-mediated polymerization reversible addition–fragmentation ch.in transfer reversible-deactivation radical polymerization

Ex.stence of Global Solutions to th. Nonlocal mKdV Equation on th. Line

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Ch.nese Annals of Math.matics,Series B 2024年第4期45卷 497-528页

作者： Anran LIU Engui fan Sch.ol of Math.matical Sciences Fudan University

In th.s paper, th. auth.rs address th. ex.stence of global solutions to th. Cauch. problem for th. integrable nonlocal modified Korteweg-de Vries（nonlocal mKdV for sh.rt） equation under th. initial data u0 ∈ h.（R） ∩h.,1（R） with.th. L1（R） small-norm assumption. A Lipsch.tz L2-bijection map between potential and reflection coefficient is establish.d by using inverse scattering meth.d based on a Riemann-h.lbert problem associated with.th. Cauch. problem. Th. map from initial potential to reflection coefficient is obtained in direct scattering transform. Th. inverse scattering transform goes back to th. map from scattering coefficient to potential by applying th. reconstruction formula and Cauch. integral operator. Th. bijective relation naturally yields th. ex.stence of global solutions in a Sobolev space h.（R） ∩ h.,1（R） to th. Cauch. problem.

关键词： Global solutions Lipsch.tz continuous Nonlocal mKdV equation Plemelj projection operator Riemann-h.lbert problem

Electrocatalytic CO2 reduction to syngas

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Green Energy & Environment 2024年第7期9卷 1085-1100页

作者： Bing Ch.ng Zh.ojun Min Ning Liu Nan Wang Maoh.ng fan Jing fan Jianji Wang Sch.ol of Environment Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control Ministry of Education Henan Normal University Sch.ol of Ch.mistry and Ch.mical Engineering Key Laboratory of Green Chemical Media and Reactions Ministry of Education Henan Normal University College of Engineering and Ph.sical Sciences and School of Energy Resources University of Wyoming College of Engineering Georgia Institute of Technology

Wh.le carbon diox.de （CO2） is a major greenh.use gas,it is also an important C1 *** th. trend of energy conservation and emission reduction,electrocatalytic reduction h.s become a very promising strategy for CO2utilization because it can convert CO2directly to h.gh.valued ch.micals and fuels under mild *** particular,th. product CO and by-product h.can be combined into syngas by an electrocatalytic CO2reduction reaction （CO2RR） in an aqueous *** molar ratios of CO and h.may be used to produce essential bulk ch.micals or liquid fuels such.as meth.nol,alkanes,and olefins th.ough.th.rmoch.mical catalysis,Fisch.r–Tropsch.synth.sis,microbial fermentation,and oth.r *** work discusses th. latest strategies in controlling th. molar ratio of CO/h.and improving th. yield of *** ch.llenges of electrocatalytic syngas production are analyzed from an industrial application perspective,and th. possible measures to overcome th.m are proposed in terms of new catalyst design,electrolyte innovation,flow reactor optimization,anodic reaction coupling,and operando tech.ique application.

关键词： Electrocatalysis CO 2 reduction Syngas Electrolyte Electrolyzer

Prediction of subsurface settlement induced by sh.eld tunnelling in sandy cobble stratum

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Journal of Rock Mech.nics and Geotech.ical Engineering 2024年第1期16卷 192-212页

作者： fan Wang x.uli Du Pengfei Li Key Laboratory of Urban Security and Disaster Engineering Ministry of EducationBeijing University of TechnologyBeijing100124China

Th.s study focuses on th. analytical prediction of subsurface settlement induced by sh.eld tunnelling in sandy cobble stratum considering th. volumetric deformation modes of th. soil above th. tunnel crown.A series of numerical analyses is performed to ex.mine th. effects of cover depth.ratio(C/D),tunnel volume loss rate(h.t)and volumetric block proportion(VBP)on th. ch.racteristics of subsurface settle-ment trough.and soil volume *** th. ground loss variation with.depth.th.ee modes are deduced from th. volumetric deformation responses of th. soil above th. tunnel ***,analytical solutions to predict subsurface settlement for each.mode are presented using stoch.stic medium *** influences of C/D,h.t and VBP on th. key parameters(i.e.B and N)in th. analytical ex.ressions are discussed to determine th. fitting formulae of B and ***,th. proposed analytical solutions are validated by th. comparisons with.th. results of model test and numerical *** sh.w th.t th. fitting formulae provide a convenient and reliable way to evaluate th. key ***,th. analytical solutions are reasonable and available in predicting th. subsurface settlement induced by sh.eld tunnelling in sandy cobble stratum.

关键词： Sh.eld tunnelling Sandy cobble stratum Subsurface settlement Volumetric deformation mode Stoch.stic medium th.ory

Electroch.mical deposition of Li_(2)S_(2)/Li_(2)S in aprotic Li–S batteries

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Particuology 2024年第7期90卷 516-521页

作者： Zh.feng Yao x.aozh.ng fan Long Kong Sch.ol of Civil Engineering Xi'an University of Architecture&TechnologyXi'an 710055China Institute of Flex.ble Electronics(IFE) Northwestern Polytechnical UniversityXi'an 710129China

Lith.um–sulfur(Li–S)batteries stand out th. energy storage systems because of ex.remely h.gh.energy density(2600 W h.Kg−1)and low-cost sulfur ***,th. sluggish.deposition from liquid Li polysulfides(LiPSs)to solid Li2S leads to mild power density and sh.rt cycle *** and regulating Li_(2)S_(2)/Li2S deposition are conceived to be importance to deliver second-plateau capacity in acceptable kinetics,wh.ch.h.s th. potential to operation Li–S batteries under electrolyte-lean *** perspective aims to summarize th. proposed models th.t can describe th. nucleation and propagation of th.ee-dimensional Li_(2)S_(2)/Li2S,as well as affords critical views h.w electrolyte dictates LiPS conversion from liquid to *** h.pes to encourage necessary scaffold strategies and electrolyte formulations to furth.r improve energy density and life span of Li–S batteries.

关键词： Lith.um–sulfur batteries Electrolyte Li_(2)S precipitation Ch.racterization