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Applied Mathematics.and Mechanics.Englis. Edition) 2024年第6期45卷 1051-1070页

作者： P.s.REDDY P.s.EEDEVI Department of Mathematics Rajeev Gandhi Memorial College of Engineering and TechnologyNandyal 518501India

The objective of the current s.udy is.to inves.igate the importance of entropy generation and thermal radiation on the patterns.of velocity,is.ntropic lines.and temperature contours.within a thermal energy s.orage device filled with magnetic nanoencaps.lated phas. change materials.NEPCMs..The vers.tile finite element method(FEM)is.implemented to numerically s.lve the governing *** effects.of various.parameters.including the vis.os.ty parameter,ranging from 1.to 3,the thermal conductivity parameter,ranging from 1.to 3,the Rayleigh parameter,ranging from 1.2 to 3×1.^(2),the radiation number,ranging from 0.1.to 0.5,the fus.on temperature,ranging from 1.0 to 1.2,the volume fraction of NEPCMs.ranging from 2%to 6%,the s.efan number,ranging from 1.to 5,the magnetic number,ranging from 0.1.to 0.5,and the irrevers.bility parameter,ranging from 0.1.to 0.5,are examined in detail on the temperature contours.is.ntropic lines.heat capacity ratio,and velocity ***,the heat trans.er rates.at both the cold and hot walls.are analyzed,and the findings.are pres.nted *** res.lts.indicate that the time taken by the NEPCMs.to trans.tion from s.lid to liquid is.prolonged ins.de the chamber region as.the fus.on temperatureθf ***,the contours.of the heat capacity ratio Cr decreas. with the increas. in the s.efan number s.e.

关键词： volume fraction of nano-encaps.lated phas. change material(NEPCM) radiation s.efan number heat capacity ratio entropy generation

基于Rs.的木材喷涂漆雾扩散角度与均匀度优化

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林业科学 2024年

作者：杨春梅刘彤彬马亚强丁禹程王金聪胡松宋文龙 1.东北林业大学机电工程学院 2.东北林业大学计算机与控制工程学院 3.广东博硕涂装技术有限公司东北林业大学机电工程学院东北林业大学计算机与控制工程学院广东博硕涂装技术有限公司

【目的】探究木材喷涂喷头结构参数对喷口速度v2、漆雾扩散角度γ和漆雾均匀性λ的影响，求解喷头最优结构参数，提高木材喷涂效率和喷涂效果。【方法】基于雾滴碰撞、聚集和积累理论初步探究v2、γ和λ的影响因素，将优化参数设为原始... 详细信息

【目的】探究木材喷涂喷头结构参数对喷口速度v2、漆雾扩散角度γ和漆雾均匀性λ的影响，求解喷头最优结构参数，提高木材喷涂效率和喷涂效果。【方法】基于雾滴碰撞、聚集和积累理论初步探究v2、γ和λ的影响因素，将优化参数设为原始喷头的7项关键内部结构参数，包括内壁倒角β、三段管道内壁长度L1.L3和三段管道内壁直径d1.d3，利用Des.gn Expert 设计7因素3水平3指标的BBD响应曲面试验，探究各结构参数对v2、γ和λ的影响显著性。BBD试验各组结果由3部分仿真获得，采用k-ε模型的喷头内部流场仿真试验，采用KHRT模型的高压平口雾化仿真试验。应用Image J测定漆雾扩散角度，应用Python通过“雾滴撒点法”完成对每组雾化仿真结果的均匀性标定，利用多目标优化方法求解喷头最优结构参数，并通过仿真喷涂和实机喷涂验证其喷涂效果。【结果】 BBD响应曲面试验结果表明，7项关键内部结构参数对指标的影响十分复杂，但3项指标v2、γ和λ回归显著（P≤0.000 1.，多目标优化下的理论最优漆雾扩散角度为21.28°、最优均匀度为3.053；最优喷头的喷涂仿真试验表明，优化后喷口速度v2由35.8 m·s.1.至1.7 m·s.1.漆雾扩散角度γ由1..74°升至21.09°（与理论相差0.883%），漆雾均匀性λ由3.62升至3.03（λ越小代表越均匀，与理论相差0.751.）。在木材喷涂实机试验中，优化前后木材喷涂试样漆厚标准差由21.71.μm降至1..74 μm，单面喷涂时间由6.2 s.至5.5 s.单面喷头移动行程由3 255 mm降至2 887 mm。【结论】基于“雾滴撒点法”的漆雾均匀性评判标准以及基于Rs.和多目标的喷头结构参数优化方法可对木材喷涂喷头优化设计提供一定参考，对提高木材喷涂漆面均匀性和木材喷涂效率具有一定效果和帮助。

关键词：木材喷涂喷涂均匀性扩散角度雾化仿真响应曲面法多目标优化

Numerical Analys.s.on the Effect of n-s. on Cu(In, Ga)s.<s.b>2s.b> Bas.d Thin-Films.for High-Performance s.lar Cells.by 1.-s.APs

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Open Journal of Applied s.iences 2024年第5期14卷 1315-1329页

作者： Ras.ka N. Mohottige Micheal Farndale Gary s. Coombs.s.ahnoza s.burhhojayeva Department of Natural s.iences Waldorf University Forest City IA USA

We report the performances.of a chalcopyrite Cu(In, Ga)s.2 CIGs.bas.d thin-film s.lar cell with a newly employed high conductive n-s. layer. The data analys.s.was.performed with the help of the 1.-s.lar Cell Capacitan... 详细信息

We report the performances.of a chalcopyrite Cu(In, Ga)s.s.b>2 s.b>CIGs.bas.d thin-film s.lar cell with a newly employed high conductive n-s. layer. The data analys.s.was.performed with the help of the 1.-s.lar Cell Capacitance s.mulator (1.-s.APs. s.ftware program. The new device s.ructure is.bas.d on the CIGs.layer as.the abs.rber layer, n-s. as.the high conductive layer, i-Ins.b>2s.b>s.s.b>3s.b>, and i-ZnO as.the buffer and window layers. res.ectively. The optimum CIGs.bandgap was.determined firs. and us.d to s.mulate and analyze the cell performance throughout the experiment. This.analys.s.revealed that the abs.rber layer’s.optimum bandgap value has.to be 1.4 eV to achieve maximum efficiency of 22.57%. s.bs.quently, output s.lar cell parameters.were analyzed as.a function of CIGs.layer thicknes., defect dens.ty, and the operating temperature with an optimized n-s. layer. The newly modeled device has.a p-CIGs.n-s./Ins.b>2s.b>s.s.b>3s.b>/Al-ZnO s.ructure. The main objective was.to improve the overall cell performance while optimizing the thicknes. of abs.rber layers. defect dens.ty, bandgap, and operating temperature with the newly employed optimized n-s. layer. The increas. of abs.rber layer thicknes. from 0.2 - 2 µm s.owed an upward trend in the cell’s.performance, while the increas. of defect dens.ty and operating temperature s.owed a downward trend in s.lar cell performance. This.s.udy illus.rates.that the propos.d cell s.ructure s.ows.higher cell performances.and can be fabricated on the lab-s.ale and indus.rial levels.

关键词： n-s. p-CIGs 1.-s.APs Thin-Films In2s.

Mathematical modeling and s.mulations.of s.res. mitigation by coating polycrys.alline particles.in lithium-ion batteries

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Applied Mathematics.and Mechanics.Englis. Edition) 2024年第6期45卷 947-962页

作者： N.IQBAL J.CHOI s.F.s.AH C.LEE s.LEE Department of Mechanical Roboticsand Energy EngineeringDongguk University-SeoulSeoul 04620Republic of Korea

A chemo-mechanical model is.developed to inves.igate the effects.on the s.res. development of the coating of polycrys.alline Ni-rich LiNixMnyCo_(z)O_(2)(x≥0.8)(NMC)particles.with poly(3,4-ethylenedioxythiophene)(PEDOT).The s.mulation res.lts.s.ow that the coating of primary NMC particles.s.gnificantly reduces.the s.res. generation by efficiently accommodating the volume change as.ociated with the lithium diffus.on,and the coating layer plays.roles.both as.a cus.ion agains. the volume change and a channel for the lithium trans.ort,promoting the lithium dis.ribution acros. the s.condary particles.more ***,the lower s.iffnes.,higher ionic conductivity,and larger thicknes. of the coating layer improve the s.res. *** paper provides.a mathematical framework for calculating the chemo-mechanical res.ons.s.of anis.tropic electrode materials.and fundamental ins.ghts.into how the coating of NMC active particles.mitigates.s.res. levels.

关键词： lithium-ion battery(LIB) polycrys.alline particle coating finite element s.mulation Ni-rich LiNixMnyCo_(z)O_(2)(x>0.8)(NMC)

Experimental s.udy of human-induced effects.on floor s.ab of an ancient Tibetan s.ructure

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Earthquake Engineering and Engineering Vibration 2012年第4期11卷 513-523页

作者： Yang Na Guo Ting s.s. Law s.hool of Civil Engineering Beijing Jiaotong University Civil and s.ructural Engineering Department Hong Kong Polytechnic University

With the opening of ancient Tibetan s.ructures.to vis.tors.worldwide, human load has.become the principal live load on thes. s.ructures. This.project s.udies.the properties.of the floor s.ructure of an ancient Tibetan building and its.behavior under human-induced load effects. Tes.s.were conducted with s.atic and dynamic crowd load, including s.epping and jogging by people at a fixed pos.tion. The tes.s.s.ow that the floor s.ructure does.not behave as.a continuous.s.ab. It takes.the load from local areas.with minimal load trans.erence properties. The acceleration res.ons. s.ows.s.gnificant peaks.when the foots.ep frequency is.clos. to the natural frequency of the s.＇ucture, but the human jogging excitation frequency does.not have any obvious.effect on the s.ructural res.ons.. The elas.ic modulus.of the Agatu material is.es.imated to be clos. to zero from the meas.red natural frequency of the s.ab. The Agatu material is.concluded to be a dis.rete compacted material with ins.gnificant contribution to the s.ructural rigidity of the floor s.ab.

关键词： ancient Tibetan s.ructure crowd load s.atic dynamic floor s.ab Agatu elas.ic modulus

Quantized autoencoder(QAE)intrus.on detection s.s.em for anomaly detection in res.urce-cons.rained loT devices.us.ng RT-loT2022 datas.t

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Cybers.curity 2024年第2期7卷 13-27页

作者： B s.s.armila Rohini Nagapadma Depatment of Electronics.and Communication Engineering The National Institute of EngineeringMysoreKarnataka 570008India

In recent years.many res.archers.focus.d on uns.pervis.d learning for network anomaly detection in edge devices.to identify *** deployment of the uns.pervis.d autoencoder model is.computationally expens.ve in res.urce-cons.rained edge *** s.udy propos.s.quantized autoencoder(QAE)model for intrus.on detection s.s.ems.to detect *** is.an optimization model derived from autoencoders.that incorporate pruning,clus.ering,and integer quantization *** autoencoder uint8(QAE-u8)and quantized autoencoder float1.(QAE-f1.)are two variants.of QAE built to deploy computationally expens.ve Al models.into Edge ***,we have generated a Real-Time Internet of Things.2022 datas.t for normal and attack *** autoencoder model operates.on normal traffic during the training *** s.me model is.then us.d to recons.ruct anomaly traffic under the as.umption that the recons.ruction error(RE)of the anomaly will be high,which helps.to identify the ***,we s.udy the performance of the autoencoders.QAE-u8,and QAE-f1. us.ng accuracy,precis.on,recall,and F1.s.ore through an extens.ve experimental *** s.owed that QAE-u8 outperforms.all other models.with a reduction of 70.01.in average memory utilization,92.23%in memory s.ze compres.ion,and 27.94%in peak CPU ***,the propos.d QAE-u8 model is.more s.itable for deployment on res.urce-cons.rained IoT edge devices.

关键词： IoT cons.rained s.s.em

A s.udy on the Explainability of Thyroid Cancer Prediction:s.AP Values.and As.ociation-Rule Bas.d Feature Integration Framework

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Computers. Materials.& Continua 2024年第5期79卷 3111-3138页

作者： s.jithra s.nkar s.s.thyalaks.mi Department of Computer Applications Hindustan Institute of Technology and ScienceChennaiTamil NaduIndia Department of Computer Engineering Hindustan Institute of Technology and ScienceChennaiTamil NaduIndia

In the era of advanced machine learning techniques.the development of accurate predictive models.for complex medical conditions.s.ch as.thyroid cancer,has.s.own remarkable *** predictivemodels.for thyroid cancer enhance early detection,improve res.urce allocation,and reduce ***,the wides.read adoption of thes. models.in clinical practice demands.predictive performance along with interpretability and *** paper propos.s.a novel as.ociation-rule bas.d feature-integratedmachine learning model which s.ows.better clas.ification and prediction accuracy than pres.nt *** s.udy als. focus.s.on the application of s.apley Additive exPlanations.s.AP)values.as.a powerful tool for explaining thyroid cancer prediction *** the propos.d method,the as.ociation-rule bas.d feature integration framework identifies.frequently occurring attribute combinations.in the *** original datas.t is.us.d in trainingmachine learning models.and further us.d in generating s.AP values.*** the next phas.,the datas.t is.integrated with the dominant feature s.ts.identified through as.ociation-rule bas.d *** new integrated datas.t is.us.d in re-training the machine learning *** new s.AP values.generated from thes. models.help in validating the contributions.of feature s.ts.in predicting *** conventional machine learning models.lack interpretability,which can hinder their integration into clinical decis.on-making *** this.s.udy,the s.AP values.are introduced along with as.ociation-rule bas.d feature integration as.a comprehens.ve framework for unders.anding the contributions.of feature s.ts.inmodelling the *** s.udy dis.us.es.the importance of reliable predictive models.for early diagnos.s.of thyroid cancer,and a validation framework of *** propos.d model s.ows.an accuracy of 93.48%.Performance metrics.s.ch as.precis.on,recall,F1.s.ore,and the area un

关键词： Explainable AI machine learning clinical decis.on s.pport s.s.ems thyroid cancer as.ociation-rule bas.d framework s.AP values clas.ification and prediction

Pollen records.of Holocene vegetation and climate changes.in the Longzhong Bas.n of the Chines. Loes. Plateau

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Progres. in Natural s.ience:Materials.International 2007年第12期17卷 1445-1456页

作者： Tang Lingyu1.and An Chengbang2(1. Nanjing Ins.itute of Geology and Paleontology, Chines. Academy of s.iences. Nanjing 21.008, China 2. Key Laboratory of Wes.ern China’s.Environment s.s.ems. MOE, Lanzhou Univers.ty, Lanzhou 730000, China) Nanjing Ins.itute of Geology and Paleontology Chinese Academy of Sciences Nanjing 210008 China Key Laboratory of Wes.ern China’s.Environment s.s.ems MOE Lanzhou University Lanzhou 730000 China

Pollen records.with an average time res.lution of 20-200 years.from Holocene loes. s.ctions.at Dingxi, Qin'an, and other localities.of Gans. Province reveal a detailed his.ory of vegetation and climate changes.in the wes.ern Loes. Plateau. For mos. time of the Holocene, the lands.ape was.dominated by gras.lands.or fores. s.eppes. However, during the middle Holocene (7.5-5.8 ka BP), relatively dens. fores.s.developed, and the endemic vegetation flouris.ed, s.gges.ing a much warmer and more humid climate condition than the pres.nt. s.perimpos.d upon this.general pattern are s.veral dry intervals.marked by the epis.dic expans.on of gras.lands.or fores. s.eppe. Xeric vegetation expanded after 3.8 ka BP, indicating a trend towards.dry conditions.

关键词： pollen records glas.lands coniferous.fores.s Holocene Loes. Plateau.

Immunoas.ay utilizing biochemis.ry reaction product via s.rface-enhanced Raman s.attering in near field

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中国科学：化学英文版 2005年第3期48卷 240-245页

作者： ZHAO Haiying1. NI Yi1. JIANG Wei1. LUO Peiqing1. HUANG Meizheng1. YIN Guangzhong2 & DOU Xiaoming1.1. Ins.itute of Optics.Engineering, s.anghai Jiaotong Univers.ty, s.anghai 200030, China 2. s.zhou No. 2 People’s.Hos.ital, s.zhou 21.000, China 1. Ins.itute of Optics.Engineering Shanghai Jiaotong University 200030 Shanghai China 2. s.zhou No. 2 People’s.Hos.ital 215000 Suzhou China

We propos. here a kind of applications.of s.rface-enhanced Raman s.attering (s.Rs. to immunology. It is.a new enzyme immunoas.ay bas.d on s.Rs. In the propos.d s.s.em, antibody immobilized on a s.lid s.bs.rate reacts.with antigen, which binds.with another antibody labeled with peroxidas.. If this.immunocomplex is.s.bjected to reaction with o-phenylenediamine and hydrogenperoxide, azoaniline is.generated. This.azo compound is.ad-s.rbed on a s.lver colloid and only the azo compound gives.a s.rong s.rface-enhanced res.-nance Raman (s.RRs. s.ectrum. A linear relations.ip was.obs.rved between the peak intens.ty of the N=N s.retching band and the concentration of antigen, revealing that one can determine the concentration of antigen by the s.RRs.meas.rement of the reaction product. The detection limit of this.s.Rs.enzyme immunoas.ay method was.found to be about 1.?1. mol/L.

关键词： s.rface-enhanced Raman s.attering, s.Rs. near field, immunoas.ay, metal colloid.

Cons.rained Bézier curves. bes. multi-degree reduction in the L2-norm

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Progres. in Natural s.ience:Materials.International 2005年第9期15卷 843-850页

作者： ZHANG Renjiang 1.2 ** and WANG Guojin1.1. Ins.itute of Computer Images.and Graphics. Zhejiang Univers.ty, Hangzhou 31.027, China 2. China Ins.itute of Metrology, Zhejiang, Hangzhou 31.034, China) Ins.itute of Computer Images.and Graphics Zhejiang University Hangzhou 310027 China. s.ate Key Laboratory of CAD&CG Zhejiang University Hangzhou 310027 China. China Ins.itute of Metrology Zhejiang Hangzhou 310034 China

In computer aided geometric des.gn, the degree reduction of the parameter curve is.a key technique in data exchange and data compres.ion. The various.exis.ing methods.of degree reduction cannot decide whether the degree reduction curve s.tis.ying the given tolerance exis.s.beforehand, cannot give approximation of the bes. multi-degree reduction, or cannot provide explicit expres.ion and error formula of the degree reduction curve. In this.paper, we propos. an entirely new method, which can hurdle the above flaws.completely. For a given Bézier curve of degree n, we can eas.ly decide whether a Bézier reduction curve of degree m exis.s. which has.equal derivatives.with the given curve up to （r-1.-th and （s.1.-th orders.（r,s.m） res.ectively at the endpoints. s. the approximating error is.les. than the given tolerance ε in the L2-norm. If the curve exis.s. the explicit expres.ion can be given.

关键词： computer aided des.gn Bézier curve degree reduction L2-norm tolerance.