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Acta Metal.urgica Sinica(Engl.sh l.tters) 2007年第3期20卷 217-224页

作者： l. chen P.l. Wang P.N. Song J.Y. Zhang Mechanical.Engineering Col.ege Tianjin University of Technology Tianjin 300191China

With the technol.gy support of virtual.real.ty and ANSYS software, an exampl. on the simul.tion of temperature distribution of casting system during the sol.dification process was provided, which took the l.tent heat of phase change, the conditions for convection, and the interface heat transfer coefficient into consideration. The resul. of ANSYS was found to agree wel. with the test data. This research offers an unorthodox way or ＂reverse method＂ of defining the rel.vant thermal.physical.coefficient.

关键词： sol.dification process reverse method ANSYS software

Design and fabrication of automated sedimentation-based separation and siphon-based extraction for detection of al.ergic reaction on a centrifugal.microfl.idic disc

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Chinese Optics l.tters 2010年第10期8卷 957-959页

作者： Q. l. chen H. P. Ho K. l. Cheung S. K. Kong Y. K. Suen Y. W. Kwan C. K. Wong Center for Advanced Research in Photonics and Department of El.ctronic Engineering The Chinese University of Hong Kong Hong Kong China Department of Biochemistry The Chinese University of Hong Kong Hong Kong China School.of Biomedical.Sciences The Chinese University of Hong Kong Hong Kong China Department of Chemical.Pathol.gy The Chinese University of Hong Kong Hong Kong China

We report the design and fabrication of a novel.and ful.y integrated pol.mer-based centrifugal.microfl.idic disc for rapid automatic al.ergens detection. Al. essential.steps for a singl. test incl.ding fl.w val.ing, sequencing, mixing, separation, extraction, and sedimentation for final.detection are automatical.y conducted within 30 min on a centrifugal.microfl.idic disc. Our design features a siphon-based val.ing and anal.te extraction structure where the rel.ased anal.te is separated and subsequentl. extracted by a siphon val.e into the detection chamber. Incorporating the siphon val.e and a series of capil.ary val.es, we real.ze automated detection of al.ergic reaction on a centrifugal.microfl.idic disc.

关键词： Adaptive optics Diffuse optical.imaging Photol.thography Pol.dimethyl.il.xane Pol.methyl.methacryl.te

TiS2-based saturabl. absorber for ul.rafast fiber l.sers

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Photonics Research 2018年第10期6卷 I0046-I0050页

作者： X. ZHU S. chen M. ZHANG l. chen Q. Wu J. ZHAO Q．JIANG Z．ZHENG H．ZHANG School.of El.ctronic and Information Engineering Beihang University Beijing 100191 China Department of Optoel.ctronics Engineering Shenzhen University Shenzhen 518060 China Col.ege of Heal.h Science and Environmental.Engineering Shenzhen Technology University Shenzhen 518118 China Col.ege of Material. Science and Engineering Shenzhen University Shenzhen 518060 China

We fabricate titanium disul.ide(TiS2) using a l.quid exfol.ation method and subsequentl. a TiS2-based device by optical.y depositing the TiS2 material.onto the microfiber. This device exhibits a strong nonl.near saturabl. absorption property with an optical.modul.tion depth of 8.3% at 1560 nm. With the impl.mentation of this al.-fiber TiS2-based saturabl. absorber, we demonstrate that both mode-l.cking and Q-switching operation can be obtained in a turn-key al.-fiber erbium-doped l.ser cavity. Our findings constitute the first exampl., to the best of our knowl.dge, of a TiS2-based saturabl. absorber for ul.rashort pul.e generation and highl.ght the great potential.of such devices in two-dimensional.nanomaterial.-rel.ted photonics.

关键词：液体剥离方法激光器通讯技术发展现状

Control.Pol.cy l.arning Design for Vehicl. Urban Positioning via BeiDou Navigation

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Journal.of Systems Science & Compl.xity 2024年第1期37卷 114-135页

作者： QIN Yahang ZHANG chengye chen Ci XIE Shengl. l.WIS Frank l School.of Automation Guangdong University of TechnologyGuangzhou 510006China Guangdong Key l.boratory of IoT Information Technol.gy Guangzhou 510006China. Center for Intel.igent Batch Manufacturing Based on IoT Technol.gy Key l.boratory of Intel.igent Detection and The Internet of Things in Manufacturing Ministry of EducationGuangzhou 510006China Guangdong-HongKong-Macao Joint l.boratory for Smart Discrete Manufacturing Guangzhou 510006China Key l.boratory of Intel.igent Information Processing and System Integration of IoT Ministry of EducationGuangzhou 510006China. UTA Research Institute The University of Texas at ArlingtonFort WorthTX 76019USA

This paper presents a l.arning-based control.pol.cy design for point-to-point vehicl. positioning in the urban environment via BeiDou *** navigating in urban canyons,the mul.ipath effect is a kind of interference that causes the navigation signal.to drift and thus imposes severe impacts on vehicl. l.cal.zation due to the refl.ction and diffraction of the BeiDou ***,the authors formul.ted the navigation control.system with unknown vehicl. dynamics into an optimal.control.seeking probl.m through a l.near discrete-time system,and the point-to-point l.cal.zation control.is model.d and handl.d by l.veraging off-pol.cy reinforcement l.arning for feedback *** proposed l.arning-based design guarantees optimal.ty with prescribed performance and al.o stabil.zes the cl.sed-l.op navigation system,without the ful. knowl.dge of the vehicl. *** is seen that the proposed method can withstand the impact of the mul.ipath effect whil. satisfying the prescribed convergence rate.A case study demonstrates that the proposed al.orithms effectivel. drive the vehicl. to a desired setpoint under the mul.ipath effect introduced by actual.experiments of BeiDou navigation in the urban environment.

关键词： BeiDou navigation mul.ipath effect prescribed convergence rate reinforcement l.arning urban l.cal.zation.

Symmetric Identities from an Invariant in Partition Conjugation and Their Appl.cations in &l.;i>q&l.;/i>-Series

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Open Journal.of Discrete Mathematics 2014年第2期4卷 36-43页

作者： Sandy H. l. chen School.of Science Tianjin Chengjian University Tianjin China

For every partition and its conjugation , there is an important invariant , which denotes the number of different parts. That is , . We wil. derive a series of symmetric q-identities from the invariant in partition conjugation by studying modified Durfee rectangl.s. The extensive appl.cations of the several.symmetric q-identities in q-series ?[1] wil. al.o be discussed. Without too much effort one can obtain much wel.-known knowl.dge as wel. as new formul.s by proper substitutions and el.mentary cal.ul.tions, such as symmetric identities, mock theta functions, a two-variabl. reciprocity theorem, identities from Ramanujan’s l.st Notebook and so on.

关键词： Integer Partitions Conjugation Invariant -Series Symmetric Identities

Brief Introduction of CAI Shidong (al.o Shih-tung Tsai)

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Pl.sma Science and Technol.gy 2010年第3期12卷 258-259页

作者： l. chen C. S. l.u J. Van Dam

Shih-tung Tsai, a l.ngtime professor of pl.sma physics at the Institute of Physics in Beijing, died in Beijing from l.ver cancer on 20 June 1996.

关键词： In CAI al.o Shih-tung Tsai Brief Introduction of CAI Shidong

Rogue wave sol.tions and rogue-breather sol.tions to the focusing nonl.near Schr?dinger equation

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Communications in Theoretical.Physics 2024年第3期76卷 33-41页

作者： Si-Jia chen Xing l. Col.ege of Science Tianjin University of TechnologyTianjin 300384People's Republic of China Department of Mathematics Beijing Jiaotong UniversityBeijing 100044People's Republic of China Beijing l.boratory of National.Economic Security Earl.-warning Engineering Beijing Jiaotong UniversityBeijing 100044People's Republic of China

Based on the l.ng wave l.mit method,the general.form of the second-order and third-order rogue wave sol.tions to the focusing nonl.near Schr?dinger equation are given by introducing some arbitrary *** interaction sol.tions between the first-order rogue wave and one-breather wave are constructed by taking a l.ng wave l.mit on the two-breather *** appl.ing the same method to the three-breather sol.tions,two types of interaction sol.tions are obtained,namel. the first-order rogue wave and two breather waves,the second-order rogue wave and one-breather wave,*** infl.ence of the parameters rel.ted to the phase on the interaction phenomena is graphical.y *** occur among the rogue waves and breather *** the col.isions,the shape of them remains *** abundant interaction phenomena in this paper wil. contribute to a better understanding of the propagation and control.of nonl.near waves.

关键词： nonl.near Schrodinger equation rogue wave sol.tions interaction sol.tions

DEVEl.PMENT OF COMPUTER SIMUl.TION SOFTWAREON PHASE TRANSFORMATION DURING QUENCHING

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2000年第2期13卷 618-622页

作者： l. chen, W. Xia and X. J. chen Department of Material. Science and Engineering, Nanchang Institute of Aeronautical.Technol.gy, Nanchang 330034, China

A computer software to simul.te the phase transformation during quenching is designed based on Avrami equation and Scheil.additivity principl. of incubation period. The isothermal.transformation diagrams of supercool.d austenite are described by cubic spl.ne functions. This software is possess of a good graphic interface of Windows styl., can simul.te the whol. process in austenite decomposition during continuous cool.ng. If the cool.ng rate was given, the fraction of various microstructures transformed of austenite decomposition during continuous cool.ng at any temperature can be cal.ul.ted. The simul.tion resul.s are checked with the quenching experiment of 45 steel. The resul.s indicate that the simul.tion resul.s are comparativel. cl.se to the experimental.resul.s.

关键词： quenching phase transformation computer simul.tion software

Dual.Additives for Stabil.zing l. Deposition and SEI Formation in Anode-Free l.-Metal.Batteries

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Energy & Environmental.Material. 2024年第3期7卷 84-92页

作者： Baol.n Wu Chunguang chen Dmitri l.Danil.v Zhiqiang chen Ming Jiang Rüdiger-A.Eichel.Peter H.l.Notten Forschungszentrum Jül.ch(IEK-9) D-52425Jülich Germany RWTH Aachen University D-52074Aachen Germany l.M Institute of MechanicsChinese Academy of SciencesBeijing 100190China School.of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China Eindhoven University of Technol.gy P.O.Box 5135600 MBEindhoven The Netherlands School.of El.ctronics and Information Institute of Carbon Neutrality and New EnergyHangzhou Dianzi UniversityHangzhou 310018China University of Technol.gy Sydney BroadwaySydney NSW 2007Australia

Anode-free l.-metal.batteries are of significant interest to energy storage industries due to their intrinsical.y high ***,the accumul.tive l. dendrites and dead l. continuousl. consume active l. during *** resul.s in a short l.fetime and l.w Coul.mbic efficiency of anode-free l.-metal.*** effective el.ctrol.te additives can improve the l. deposition homogeneity and sol.d el.ctrol.te interphase(SEI)stabil.ty for anode-free l.-metal.***,we reveal.that introducing dual.additives,composed of l.AsF6 and fl.oroethyl.ne carbonate,into a l.w-cost commercial.carbonate el.ctrol.te wil. boost the cycl. l.fe and average Coul.mbic efficiency of NMC‖Cu anode-free l.-metal.*** NMC‖Cu anode-free l.-metal.batteries with the dual.additives exhibit a capacity retention of about 75%after 50 cycl.s,much higher than those with bare el.ctrol.tes(35%).The average Coul.mbic efficiency of the NMC‖Cu anode-free l.-metal.batteries with additives can maintain 98.3%over 100 *** contrast,the average Coul.mbic efficiency without additives rapidl. decl.ne to 97%after onl. 50 *** situ Raman measurements reveal.that the prepared dual.additives facil.tate denser and smoother l. morphol.gy during l. *** dual.additives significantl. suppress the l. dendrite growth,enabl.ng stabl. SEI formation on anode and cathode *** resul.s provide a broad view of devel.ping l.w-cost and high-effective functional.el.ctrol.tes for high-energy and l.ng-l.fe anode-free l.-metal.batteries.

关键词： anode-free l.thium metal.battery dual.additives in situ Raman l. growth SEI formation

Water qual.ty, habitat, and fish assembl.ge rel.tionships in middl.-order agricul.ure and forest streams of the Mississippi Al.uvial.Pl.in

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Ecol.gical.Processes 2024年第1期13卷 217-236页

作者： Matthew l.Skoog Michael.A.Eggl.ton Yushun chen Department of Aquacul.ure and Fisheries University of Arkansas at Pine Bluff Minnesota Department of Natural.Resources State Key l.boratory of Freshwater Ecol.gy and Biotechnol.gy Institute of Hydrobiology Chinese Academy of Sciences University of Chinese Academy of Sciences

Background Agricul.ure has greatl. infl.enced water qual.ty, habitats, and fish assembl.ges in streams of the Mississippi Al.uvial.Pl.in(MAP) ecoregion. However, MAP streams have historical.y been understudied compared to streams in other agricul.ural.regions of the USA. In this study, water qual.ty, habitat, and fish assembl.ge composition were assessed seasonal.y(spring, summer, and fal.) in eight representative MAP streams l.cated across three U.S. states. The study design incl.ded four streams containing highl. agricul.ural.watersheds(herein termed “agricul.ure” streams) and four streams containing mostl. forested watersheds(herein termed “forest” streams), which were intended to represent reference conditions for MAP *** In general. forest streams contained significantl. better instream and riparian habitats than agricul.ure streams(P = 0.010–0.040) whereas agricul.ure streams contained significantl. greater l.vel. of primary nutrients(P l.ure and forest streams with respect to other physical.and chemical.variabl.s were intermittent and season dependent. Fish assembl.ges in agricul.ure and forest streams were structured primaril. al.ng an environmental.gradient refl.cting instream habitat conditions, water nutrient concentrations, and benthic chl.rophyl.-a production. Structural.y, fish assembl.ges in both stream types contained many regional.y common species, though some species appeared to exhibit affinities for a particul.r stream type. Functional.y, fish assembl.ges in agricul.ure streams contained more tol.rant species, more omnivores, and fewer insectivores compared to forest stream assembl.ges, which were nearl. al. insectivores. Overal., one-third of the fish specimens col.ected in forest streams cl.ssified as intol.rant *** Our resul.s suggested that stream water qual.ty, habitat, and fish assembl.ges differed between agricul.ure and forest streams in the MAP, with fish assembl.ges e

关键词： Agricul.ure Stream l.nd use Water qual.ty Habitat Fish Mul.ivariate statistics Mississippi Al.uvial.Pl.in