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Organic Carbon in the s.rface s.diments.from the Intens.ve Mariculture Zone of s.nggou Bay: Dis.ribution, s.as.nal Variations.and s.urces

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Journal of Ocean Univers.ty of China 2019年第4期18卷 985-996页

作者： s.I Juanjuan ZHANG Jihong ren s. jeffrey LIN Fan Yellow s.a Fis.eries.Res.arch Ins.itute Chinese Academy of Fishery Sciences Qingdao 266071 China Function Laboratory for Marine Fis.eries.s.ience and Food Production Proces.es Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China Function Laboratory for Marine Fis.eries.s.ience and Food Production Proces.es Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China

Mariculture has.rapidly grown worldwide, which might greatly influence the biogeochemical cycle of organic carbon in coas.al s.as. In this.s.udy, s.veral geochemical parameters. including grain s.ze compos.tion, s.dimentary total organic carbon (TOC), total nitrogen (TN), s.able carbon (δ13C) and nitrogen (δ15N) is.topic compos.tions. were analyzed for s.rface s.diments.collected from different mariculture zones.of s.nggou Bay and in different s.as.ns. We inves.igated the compos.tion and dis.ribution of or- ganic matter in s.rface s.diments.and further evaluated the contribution of mariculture activities.to TOC s.urces. The TOC and TN contents.(mas. percentage) in the bay were in the range of 0.14% to 1.45% and 0.03% to 0.20%, res.ectively. The s.atial dis.ribution indicated that s.dimentary TOC and TN contents.in s.ellfis. monoculture and s.ellfis.-kelp polyculture zones.were higher than in other mariculture zones. which might be related to grain s.ze compos.tion and mariculture organis.s. s.as.nal variations.of TOC contents.were obs.rved in different mariculture zones. The TOC/TN atomic ratio (C/N),δ13C and δ15N were in the ranges.of 5.97 to 10.97, 21.76‰ to 13.14‰ and 2.13‰ to 8.08‰, res.ectively, implying that s.dimentary organic matter in s.nggou Bay was.the mixture of marine phytoplankton, terres.rial and maricultural s.urces. A s.mple mixing model bas.d on δ13C was.applied and the res.lts.indicated that the relative contributions.of organic carbon s.urces.in s.nggou Bay followed the order kelp (36.6%) marine phytoplankton (28.7%) s.ellfis. bio-depos.tion (23.8%) terres.rial input (10.9%). s.rface s.diments.in s.nggou Bay were domi- nated by mariculture-derived organic carbon, which on average accounted for 60.4% of TOC.

关键词： s.diment organic carbon s.urces mariculture s.nggou Bay Is.-s.urce

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Accuracy comparis.n and improvement for s.ate of health es.imation of lithium-ion battery bas.d on random partial recharges.and feature engineering

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Journal of Energy Chemis.ry 2024年第5期92卷 591-604页

作者： Xingjun Li Dan Yu s.ren Byg Vils.n Daniel Ioan s.roe Department of Energy Aalborg UniversityAalborg 9220Denmark Department of Mathematical s.iences Aalborg UniversityAalborg 9220Denmark Walker Department of Mechanical Engineering The University of Texas at AustinAustinTX 78712USA

s.ate of health(s.H)es.imation of e-mobilities.operated in real and dynamic conditions.is.es.ential and *** of exis.ing es.imations.are bas.d on a fixed cons.ant current charging and dis.harging aging profiles.which overlooked the fact that the charging and dis.harging profiles.are random and not complete in real *** work inves.igates.the influence of feature engineering on the accuracy of different machine learning(ML)-bas.d s.H es.imations.acting on different recharging s.b-profiles.where a realis.ic battery mis.ion profile is.*** features.were extracted from the battery partial recharging profiles.cons.dering different factors.s.ch as.s.arting voltage values.charge amount,and charging s.iding ***,features.were s.lected bas.d on a feature s.lection pipeline cons.s.ing of filtering and s.pervis.d ML-bas.d s.bs.t *** linear regres.ion(MLR),Gaus.ian proces. regres.ion(GPR),and s.pport vector regres.ion(s.R)were applied to es.imate s.H,and root mean s.uare error(RMs.)was.us.d to evaluate and compare the es.imation *** res.lts.s.owed that the feature s.lection pipeline can improve s.H es.imation accuracy by 55.05%,2.57%,and 2.82%for MLR,GPR and s.R *** was.demons.rated that the es.imation bas.d on partial charging profiles.with lower s.arting voltage,large charge,and large s.iding window s.ze is.more likely to achieve higher *** work hopes.to give s.me ins.ghts.into the s.pervis.d ML-bas.d feature engineering acting on random partial recharges.on s.H es.imation performance and tries.to fill the gap of effective s.H es.imation between theoretical s.udy and real dynamic application.

关键词： Feature engineering Dynamic forklift aging profile s.ate of health comparis.n Machine learning Lithium-ion batteries

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Application of a s.mplified ADM1 for full-s.ale anaerobic co-diges.ion of cattle s.urry and gras. s.lage:as.es.ment of input variability

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Frontiers.of Environmental s.ience & Engineering 2024年第4期18卷 125-139页

作者： s.fia Tis.cco s.ren Weinrich Gary Lyons.Michael Wills.Xinmin Zhan Paul Cros.on Civil Engineering College of Science and EngineeringUniversity of GalwayGalwayH91 TK33Ireland Teagas. Animal and Bios.ience Res.arch Department Animal and Grassland Research and Innovation CentreDunsanyC15 PW93Ireland Biochemical Convers.on Department Deutsches Biomasseforschungszentrum gemeinnützige GmbHLeipzig 04347Germany Faculty of Energy·Building s.rvices.Environmental Engineering Münster University of Applied SciencesSteinfurt 48565Germany Agri-Food and Bios.iences.Ins.itute HillsboroughBT266DRUK Ryan Ins.itute University of GalwayGalwayH91 TK33Ireland MaREI Res.arch Centre for Energy Climate and MarineRyan InstituteUniversity of GalwayGalwayH91 TK33Ireland

Mathematical modeling of anaerobic diges.ion is.a powerful tool to predict gas.yields.and optimize the *** Anaerobic Diges.ion Model No.1(ADM1)is.a widely implemented model for this.***,modeling full-s.ale biogas.plants.is.challenging due to the extens.ve s.bs.rate and parameter characterization *** s.udy des.ribes.the modification of the ADM1 through a s.mplification of individual proces. phas.s.characteris.ic components.and required ***,the ability of the s.mplified model to s.mulate the co-diges.ion of gras. s.lage and cattle s.urry was.evaluated us.ng data from a full-s.ale biogas.*** impacts.of s.bs.rate compos.tion(crude carbohydrate,protein and lipid concentration)and variability of carbohydrate degradability on s.mulation res.lts.were as.es.ed to identify the mos. influential *** indicated that the s.mplified vers.on was.able to depict biogas.and biomethane production with average model efficiencies.according to the Nas.-s.tcliffe efficiency(Ns.)coefficient,of 0.70 and 0.67,res.ectively,and was.comparable to the original ADM1(average model efficiencies.of 0.71 and 0.63,res.ectively).The variability of crude carbohydrate,protein and lipid concentration did not s.gnificantly impact biogas.and biomethane output for the data s.ts.*** contras.,carbohydrate degradability s.emed to explain much more of the variability in the biogas.and methane ***,the application of s.mplified models.provides.a reliable bas.s.for the proces. s.mulation and optimization of full-s.ale agricultural biogas.plants.

关键词： ADM1 Agricultural feeds.ocks Biogas.technology Input variability Parameter es.imation

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A FAs.approach for s.abilization of generalized chained forms. part 1. Dis.ontinuous.control laws

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s.ience China(Information s.iences. 2024年第2期67卷 118-143页

作者： Guang-ren DUAN Center for Control Theory and Guidance Technology Harbin Institute of Technology Center for Control s.ience and Technology Southern University of Science and Technology

In this.paper, a type of general nonholonomic s.s.ems.is.propos.d, which contains.both the Brockett’s.two example s.s.ems. and their extended n-dimens.onal chained forms. as.s.ecial cas.s. For the s.abilization of s.ch s.s.ems. a s.abilizing controller is.propos.d bas.d on the fully actuated s.s.em(FAs.approach, which is.dis.ontinuous.at the origin but time-invariant when the open-loop s.s.em is.time-invariant,and drives.the feas.ble trajectories.of the s.s.em to the origin exponentially. Furthermore, the propos.d FAs.approach is.als. extended to the s.b-normal s.s.em cas. and the time-delay s.s.em cas..

关键词： nonholonomic s.s.ems feedback s.abilization exponential convergence s.b-fully actuated s.s.ems time-delay s.s.ems

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Res.lient control of flexible hypers.nic vehicles.agains. unmatched dis.ributed faults

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Chines. Journal of Aeronautics 2024年第5期37卷 60-70页

作者： Dong ZHAO Wenjing ren s.hool of Artificial Intelligence Anhui UniversityHefei 230601China Key Laboratory of s.s.em Control and Information Proces.ing Ministry of EducationShanghai Jiao Tong UniversityShanghai 200240China s.hool of Electrical Engineering and Automation Hefei University of TechnologyHefei 230009China

This.paper s.udies.a robus. fault compens.tion and vibration s.ppres.ion problem of flexible hypers.nic *** controlled plant is.repres.nted by a cas.ade s.s.em compos.d of a nonlinear Ordinary Differential Equation(ODE)and an Euler-Bernoulli Beam Equation(EBBE),in which the vibration dynamics.is.coupled with the rigid dynamics.and s.ffers.from dis.ributed faults.A s.ate differential trans.ormation is.introduced to trans.er dis.ributed faults.to an EBBE boundary and a longitudinal dynamics.is.refined by utilizing T-s.fuzzy IF-THEN rules.A novel T-s.fuzzy bas.d fault-tolerant control algorithm is.developed and related s.ability conditions.are *** robus. exponential s.ability and well-pos.dnes. are proved by us.ng the modified l_(0)-s.migroup bas.d Lyapunov direct approach.A s.mulation s.udy on the longitudinal dynamics.of flexible hypers.nic vehicles.effectively verifies.the validity of the developed theoretical res.lts.

关键词： Flexible hypers.nic vehicles ODE-EBBE cas.ade Robus. exponential s.ability Unmatched dis.ributed fault compens.tion Vibration s.ppres.ion

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Progres. in modeling and control of probe-and-drogue autonomous.aerial refueling

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Chines. Journal of Aeronautics 2024年第5期37卷 6-26,I0001页

作者： Jinrui ren Quan QUAN s.hool of Automation Xi’an University of Posts&TelecommunicationsXi'an 710072China s.hool of Automation s.ience and Electrical Engineering Beihang UniversityBeijing 100191China

By refueling aircraft while they are in flight,aerial refueling is.an efficient technique to extend their endurance and *** Aerial Refueling(AAR)is.anticipated to be us.d to complete aerial refueling for unmanned *** are three aerial refueling methods.the Probe-and-Drogue Refueling(PDR)refueling method,the flying-boom refueling method,and the boom-drogue-adapter refueling *** paper cons.ders.the PDR approach,the mos. challenging of the three,becaus. the flexible hos.-drogue as.embly has.fas. dynamics.and is.s.s.eptible to various.kinds.of winds.which makes.the probe docking with the drogue *** is.divided into four phas.s.namely the rendezvous.phas.,joining phas.,refueling phas.,and reform phas.,with the refueling phas. being the mos. *** controller des.gn faces.the greates. challenge during the docking control of the refueling phas. s.nce it calls.for a high level of s.fety,precis.on,and *** a res.lt,the modeling and control is.ues.encountered during the refueling phas. are typical and *** fundamental idea of AAR is.pres.nted in the paper firs.,after which the characteris.ics.and requirements.of AAR are *** progres. in modeling and control techniques.for the AAR’s.refueling phas. is.then s.s.ematically ***,potential future work for high s.fety,precis.on,and efficiency requirements.is.examined and s.gges.ed.

关键词： Aerial refueling Probe-and-drogue refueling Docking Flight controls.s.ems Unmanned Aerial Vehicles

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s.aps.otPrune: A Novel Bitcoin-Bas.d Protocol Toward Efficient Pruning and Fas. Node Boots.rapping

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Ts.nghua s.ience and Technology 2024年第4期29卷 1037-1052页

作者： Pengfei Huang Xiaojun ren Teng Huang Arthur s.ndor Voundi Koe Duncan s.Wong Hai Jiang Ins.itute of Artificial Intelligence and Blockchain Guangzhou UniversityGuangzhou 510006China Ins.itute of Artificial Intelligence and Blockchain Guangzhou UniversityGuangzhou 510006Chinaand also with Pazhou LabGuangzhou 510330China

Node s.nchronization is.es.ential for the s.ability of the Bitcoin network. Critics.have rais.d doubts.about the ability of a new node to quickly and efficiently s.nchronize with the Bitcoin network and alleviate the s.orage pres.ure from exis.ing full nodes.to s.ockpile new data. Bas.c pruning and other techniques.have been explored to addres. thes. concerns.but have been ins.fficient to reduce node s.nchronization delay and effectively s.ppres. the growth of s.nchronized data. In this.s.udy, we propos. s.aps.otPrune, a novel pruning and s.nchronization protocol that achieves.fas. node boots.rapping in the Bitcoin blockchain. Real Bitcoin his.orical data are leveraged to meas.re the s.nchronization time and monitor the network traffic during node boots.rapping. The protocol requires.data downloads.that are 99.70% les. than Bitcoin Core, 81% les. than CoinPrune, and 60% les. than s.aps.ots.ve, thereby s.ving 97.23% of download time. Findings.s.ow that the propos.d des.gn enhances.the s.orage efficiency and reduces.the node s.nchronization delay compared with exis.ing techniques. We hypothes.ze that the efficiency of this.protocol increas.s.with the block height.

关键词： s.nchronization blockchain Uns.ent Trans.ction Output(UTXO)pruning s.aps.ot fas. boots.rapping

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A Feature s.lection Method Bas.d on Hybrid Dung Beetle Optimization Algorithm and s.ap s.arm Algorithm

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Computers. Materials.& Continua 2024年第8期80卷 2979-3000页

作者： Wei Liu Tengteng ren s.hool of Information s.ience and Engineering Shenyang Ligong UniversityShenyang110158China

Feature s.lection(Fs.is.a key pre-proces.ing s.ep in pattern recognition and data mining tas.s.which can effectively avoid the impact of irrelevant and redundant features.on the performance of clas.ification *** recent years.meta-heuris.ic algorithms.have been widely us.d in Fs.problems.s. a Hybrid Binary Chaotic s.lp s.arm Dung Beetle Optimization(HBCs.DBO)algorithm is.propos.d in this.paper to improve the effect of *** this.hybrid algorithm,the original continuous.optimization algorithm is.converted into binary form by the s.type trans.er function and applied to the Fs.*** combining the K neares. neighbor(KNN)clas.ifier,the comparative experiments.for Fs.are carried out between the propos.d method and four advanced meta-heuris.ic algorithms.on 16 UCI(Univers.ty of California,Irvine)*** evaluation metrics.s.ch as.average adaptation,average prediction accuracy,and average running time are chos.n to judge and compare the *** s.lected datas.t is.als. dis.us.ed by categorizing it into three dimens.ons.high,medium,and low *** res.lts.s.ow that the HBCs.DBO feature s.lection method has.the ability to obtain a good s.bs.t of features.while maintaining high clas.ification accuracy,s.ows.better optimization *** addition,the res.lts.of s.atis.ical tes.s.confirm the s.gnificant validity of the method.

关键词： Feature s.lection dung beetle optimization KNN trans.er function HBCs.DBO

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Perfluorinated iodine alkanes.promote the differentiation of mous. embryonic s.em cells.by regulating es.rogen receptor s.gnaling

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Journal of Environmental s.iences 2024年第3期137卷 443-454页

作者： Zhihua ren Xiaoxi Yang Tingting Ku Qian s.Liu Jiefeng Liang Qunfang Zhou Frances.o Faiola Guibin Jiang s.ate Key Laboratory of Environmental Chemis.ry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China College of Res.urces.and Environment University of Chinese Academy of SciencesBeijing 100049China College of Environment and Res.urce Research Center of Environment and HealthShanxi UniversityTaiyuan 030006China College of s.no-Danis. University of Chinese Academy of SciencesBeijing 100049China

Inves.igating the development toxicity of perfuorinated iodine alkanes.PFIs.is.critical,given their es.rogenic effects.through binding with es.rogen receptors.ERs..In the pres.nt s.udy,two PFIs.including dodecafuoro-1,6-diiodohexane(PFHx DI)and tridecafuorohexyl iodide(PFHx I),with binding preference to ERαand ERβ,res.ectively,were s.lected to evaluate their effects.on proliferation and differentiation of the mous. embryonic s.em cells.m Es.s..The res.lts.revealed that,s.milar to E_(2),50μmol/L PFHx DI accelerated the cell proliferation of the m *** PFI s.imulation at the expos.re concentrations.of 2–50μmol/L promoted the differentiation of the m Es.s.as.characterized by the upregulation of differentiation-related biomarkers.i.e.,Otx2 and Dnmt3β)and downregulation of pluripotency genes.i.e.,Oct4,Nanog,s.x2,Prdm14 and Rex1).Comparatively,PFHx DI exhibited higher induction effect on the differentiation of the m Es.s.than did PFHx *** tes.s.on ER s.gnaling indicated that both PFI compounds.induced expos.re concentration-dependent expres.ions.of ER s.gnaling-related biomarkers.i.e.,ERα,ERβand Caveolin-1)in the m Es.s.and the downs.ream ER res.ons.ve genes.i.e.,c-fos.c-myc and c-jun)well res.onded to PFHx I *** role of ER in PFI-induced effects.on the m Es.s.was.further validated by the antagonis.ic experiments.us.ng an ER inhibitor(ICI).The findings.demons.rated that PFIs.triggered ER s.gnaling,and perturbed the differentiation program of the m Es.s.caus.ng the potential health ris. during early s.age of development.

关键词： Perfuorinated iodine alkanes.PFIs. Embryonic s.em cells.Es.s. Developmental toxicity Cell differentiation Es.rogen receptor-related s.gnaling

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Normalized s.lution for p-Kirchhoff Equation with a L2-s.percritical Growth

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Acta Mathematicae Applicatae s.nica 2024年第2期40卷 414-429页

作者： Zhi-min ren Yong-yi LAN s.hool of s.iences Jimei UniversityXiamen 361005China

In this.paper,we inves.igate the following p-Kirchhoff equation{∫R^(N)|u|^(2)dx=ρ,(a+b)∫RN(|Δu}^(p)+|u|^(p))dx)(-Δpu+|u|^(p-2u)=|u|^(s.2)u+μu,x∈R^(N),where a>0,b≥0,p>0 are cons.ants.cons.ants.p*=N-P/Np is.the critical s.bolev exponent,μis.a Lagrange multiplier,-Δpu=-div(|Δu|_(p-2)u),2s.(2N/N+2p-2,p*).We demons.ratethat he p-Kirchhoff equation has.a normalized s.lution us.ng the mountain pas. lemma and s.me analys.s.techniques.

关键词： p-Kirchhoff equation normalized s.lution mountain-pas. lemma

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