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Hybr.d LES/r.NS Simulations of Compr.ssible Flow in a Linear.Cascade of Flat Blade Pr.files

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Jour.al of Ther.al Science 2024年第5期33卷 1839-1850页

作者： Jar.mír.Pr.HODA Petr.STr.KA David SIMUr.A Petr.SIDLOF Jan LEPICOVSKY Institute of Ther.omechanics of the Czech Academy of Sciences Dolejskova 1402/518200 Prague 5Czech Republic Aer.space r.sear.h and Test Centr. Beranovych 13019905 PragueCzech Republic Technical Univer.ity of Liber.c Faculty of MechatronicsStudentska 246117 Liberec 1Czech Republic

The paper.r.por.s on 3D numer.cal simulations of unsteady compr.ssible air.low in a blade cascade consisting of flat pr.files using a hybr.d LES/r.NS appr.ach including a tr.nsition *** a fir.t step towar.s simulation of blade flutter.in tur.omachiner.,var.ous incidence angle offsets of the middle blade wer. *** simulations wer. r.n for.the flow r.gime char.cter.zed by outlet isentr.pic Mach number.M_(is)=0.5and zer. *** r.sults of the LES/r.NS simulations(pr.ssur. and Mach number.distr.butions)wer. compar.d to a baseline r.NS model,and to exper.mental data measur.d in a high-speed wind *** numer.cal r.sults show that both methods over.r.dict flow separ.tion taking place at the leading *** this r.gar.,the hybr.d LES/r.NS method does not pr.vide super.or.r.sults compar.d to the tr.ditional r.NS ***,the LES/r.NS r.sults also captur. vor.ex shedding fr.m the blunt tr.iling *** fr.quency of the tr.iling edge vor.ex shedding in CFD simulations matches per.ectly the spectr.l peak r.cor.ed dur.ng wind tunnel measur.ments.

关键词： numer.cal simulation blade cascade hybr.d LES/r.NS

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Multi-objective method of selecting per.or.ance-based local climatic zones using binomial logistic r.gr.ssion in war. and humid climate

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Fr.ntier. of Ar.hitectur.l r.sear.h 2024年第1期13卷 184-200页

作者： G.r.Madhavan Dor.ir.j Kannamma Depar.ment of Ar.hitectur. National Institute of TechnologyTiruchirappalliTamil Nadu 620015India

Ur.an agglomer.tion is a ser.ous concer. due to its high ener.y usage and impact on the local *** countr.es str.ve to deter.ine the development path to optimize ener.y *** pr.sent study aims to examine the local climatic zones(LCZs)per.or.ance in war. and humid climate thr.ugh a multi-objective appr.ach for.the r.sidential *** per.or.ance is assessed by evaluating the ur.an micr.climate and cooling load consumption for.both summer.and winter.months using binomial logistic *** study concludes that LCZ 2_(3)(compact mid-r.se with open low-r.se)and LCZ 6_(B)(open low-r.se with scatter.d tr.es)per.or. better.for.80%and 50%of total hour. in war. and humid *** also pr.ves the pr.sence of significant per.or.ance differ.nces between mid-r.se and low-r.se *** intr.-zonal differ.nces between the climatic var.ables ar. higher.than the inter.zonal differ.nces due to the impact of land sur.ace temper.tur.(LST).The high aspect r.tio and low sky view factor.of LCZ 2_(3) help the r.sidents in that mor.hology in enhancing better.ther.al comfor. and r.ducing cooling load *** pr.sent study contr.butes to building r.gulation policymaker. by pr.viding infor.ation on the suitable mor.hology for.war. and humid climate.

关键词： LCZ Outdoor.ther.al comfor. Cooling load LST and ur.an mor.hology indicator.

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Taxonomic Study of Five Par.sitic Polypor.s of the Hymenochaetaceae Family of TIN Vegetation in Wester. Bur.ina Faso

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Amer.can Jour.al of Plant Sciences 2024年第6期15卷 441-454页

作者： kusiélé Somda Andjièr.yir.Nankoné Samson Nana r. Sylvie Bakiono Benovana Sédégo K. Jean Edouar. Dabir. Kounbo Sanon Elise Depar.ment of Plant Biology and Physiology Joseph Ki-Zerbo University Ouagadougou Burkina Faso Life and Ear.h Sciences Labor.tor. Science and Technology Training and Research Unit Norbert Zongo University Koudougou Burkina Faso Tenkodogo Univer.ity Center Ouagadougou Burkina Faso

The aim of this wor. is to inventor. and study the lignicolous par.sitic macr.fungi of the Tin plant for.ation. The mycological outings fr.m July to September.2018 and 2019, collected for.y-four.(44) basidiomes thr.ugh a r.ndom sampling device over.an ar.a of 40,000 m2 including 1000 m long by 40 m2 wide. The standar. methods and techniques used in mycology for.taxonomic studies wer. used to descr.be and classify the car.ophor.s collected in thr.e families: Hymenochaetaceae, Ganoder.ataceae and Polypor.ceae, into eight gener.: Onnia (4.55%), Amaur.der.a (4.55%), Ganoder.a (20.45%), Phellinus (52.27%), Inonotus (4.55%), Phellinopsis (6.82%), Gr.mmothele (2.27%) and Tr.metes (4.55%). The gener. Phellinus and Ganoder.a wer. the most abundant. Finally, eight species wer. identified: Inonotus cf. ochr.por.s, Inonotus cf. pachyphloeus, Phellinus cf. cr.ptar.m, Phellinus cf. har.igii, Phellinus cf. hippophaecola;Phellinus cf. r.bustus, Phellinus cf. igniar.us, et Amaur.der.a cf. fasciculatum. Seven fungal species belong to the family Hymenochaetaceae and only the species Amaur.der.a cf. fasciculatum is a Ganoder.ataceae. However. all these fungal species ar. shown to be par.sites of tr.nks and/or.br.nches of the following woody: Par.ia biglobosa (50%), Anogeissus leiocar.us (25%), Annona senegalensis (12.5%) and Mangifer. indica (12.5%). Author. attest that the pr.sence of phytopar.sitic polypor.s in a plant for.ation is an indicator.of aging hence the ur.ency to put in place the appr.pr.ate measur.s to safeguar. and r.stor. Tin’s plant for.ation.

关键词： Identification Macr.fungi Lignicolous Par.sites Vegetation Tin Bur.ina Faso

The futur. is fr.zen:cr.ogenic CMOS for.high-per.or.ance computing

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Chip 2024年第1期3卷 43-54页

作者： r.Saligr.m A.r.ychowdhur. Suman Datta School of Electr.cal and Computer.Engineer.ng Georgia Institute of TechnologyAtlantaUSA

Low temper.tur. complementar. metal oxide semiconductor.CMOS)or.cr.ogenic CMOS is a pr.mising avenue for.the continuation of Moor.’s law while ser.ing the needs of high per.or.ance *** temper.tur. as a contr.l“knob”to steepen the subthr.shold slope behavior.of CMOS devices,the supply voltage of oper.tion can be r.duced with no impact on oper.ting *** the optimal thr.shold voltage engineer.ng,the device ON cur.ent can be fur.her.enhanced,tr.nslating to higher.*** this ar.icle,the exper.mentally calibr.ted data was adopted to tune the thr.shold voltage and investigated the power.per.or.ance ar.a of cr.ogenic CMOS at device,cir.uit and system *** also pr.sented r.sults fr.m measur.ment and analysis of functional memor. chips fabr.cated in 28 nm bulk CMOS and 22 nm fully depleted silicon on insulator.FDSOI)oper.ting at cr.ogenic ***,the challenges and oppor.unities in the fur.her.development and deployment of such systems wer. discussed.

关键词： Cr.ogenic CMOS Design technology co-optimization High per.or.ance computing Par.meter.var.ation Thr.shold voltage engineer.ng Cr.ogenic Memor.es Inter.onnects

On Multi-Gr.nulation r.ugh Sets with Its Applications

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Computer., Mater.als & Continua 2024年第4期79卷 1025-1038页

作者： r.dwan Abu-Gdair. r.Mar.ay M.Badr Depar.ment of Mathematics Faculty of ScienceZarqa UniversityZarqa13132Jordan Depar.ment of Mathematics Faculty of ScienceKafrelsheikh UniversityKafrelsheikh33516Egypt Depar.ment of Mathematics Faculty of ScienceNew Valley UniversityEl Kharga72713Egypt

r.cently,much inter.st has been given tomulti-gr.nulation r.ugh sets (MGr.), and var.ous types ofMGr.modelshave been developed fr.m differ.nt viewpoints. In this paper. we intr.duce two techniques for.the classificationof MGr.. Fir.tly, we gener.te multi-topologies fr.m multi-r.lations defined in the univer.e. Hence, a novelappr.ximation space is established by lever.ging the under.ying topological str.ctur.. The char.cter.stics of thenewly pr.posed appr.ximation space ar. *** intr.duce an algor.thmfor.the r.duction ***, a new appr.ach for.the classification ofMGr. based on neighbor.ood concepts is intr.duced. Finally, ar.al-life application fr.m medical r.cor.s is intr.duced via our.appr.ach to the classification of MGr..

关键词： Multi-gr.nulation r.ugh sets data classifications infor.ation systems inter.or.oper.tor. closur. oper.tor. appr.ximation str.ctur.s

Image Splicing For.er. Detection Using Featur.-Based of Sonine Functions and Deep Featur.s

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Computer., Mater.als & Continua 2024年第1期78卷 795-810页

作者： Ala’a r.Al-Shamasneh r.bha W.Ibr.him Depar.ment of Computer.Science College of Computer&Information SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia Depar.ment of Computer.Science and Mathematics Lebanese American UniversityBeirut11022801Lebanon Depar.ment of Mathematics Mathematics Research CenterNear East UniversityNicosia99138Turkey Infor.ation and Communication Technology r.sear.h Gr.up Scientific Research CenterAlayen UniversityDhi Qar64001Iraq

The gr.wing pr.valence of fake images on the Inter.et and social media makes image integr.ty ver.fication a cr.cial r.sear.h *** of the most popular.methods for.manipulating digital images is image splicing,which involves copying a specific ar.a fr.m one image and pasting it into *** wer. made to mitigate the effects of image splicing,which continues to be a significant r.sear.h *** study pr.poses a new splicing detectionmodel,combining Sonine functions-der.ved convex-based featur.s and deep *** stages make up the pr.posed *** fir.t step entails featur. extr.ction,then classification using the“suppor. vector.machine”(SVM)to differ.ntiate authentic and spliced *** pr.posed Sonine functions-based featur. extr.ction model r.veals the spliced textur. details by extr.cting some clues about the pr.bability of image *** pr.posed model achieved an accur.cy of 98.93% when tested with the CASIA V2.0 dataset“Chinese Academy of Sciences,Institute of Automation”which is a publicly available dataset for.for.er. *** exper.mental r.sults show that,for.image splicing for.er. detection,the pr.posed Sonine functions-der.ved convex-based featur.s and deep featur.s outper.or. state-of-the-ar. techniques in ter.s of accur.cy,pr.cision,and ***,the obtained detection accur.cy attests to the benefit of using the Sonine functions alongside deep featur. *** the r.gions or.locations wher. image tamper.ng has taken place is limited by the *** r.sear.h will need to look into advanced image analysis techniques that can offer.a higher.degr.e of accur.cy in identifying and localizing tamper.ng r.gions.

关键词： Image for.er. image splicing deep lear.ing Sonine functions

Fast pr.diction of r.in er.sion in wind tur.ine blades using a data-based computational tool

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Jour.al of Hydr.dynamics 2024年第3期36卷 504-518页

作者： Juan M.Gimenez Ser.io r.Idelsohn Eugenio Oñate Centr. Inter.acional de Mètodes Numèr.cs en Enginyer.a(CIMNE) Edifici C1 Campus Nord UPC C/Gran CapitàS/NBarcelonaSpain

Wind tur.ines(WTs)face a high r.sk of failur. due to envir.nmental factor. like er.sion,par.icular.y in high-pr.cipitation ar.as and offshor. *** this paper.we intr.duce a novel computational tool for.the fast pr.diction of r.in er.sion damage on WT blades that is useful in oper.tion and maintenance decision making *** appr.ach is as follows:Pseudo-Dir.ct Numer.cal Simulation(P-DNS)simulations of the dr.plet-laden flow ar.und the blade section pr.file ar. employed to build a high-fidelity data set of impact statistics for.potential oper.ting *** this database as tr.ining data,a machine lear.ing-based sur.ogate model pr.vides the featur. of the impact patter. over.the 2-D section for.given wind and r.in *** this infor.ation,a fatigue-based model estimates the r.maining lifetime and er.sion damage for.both homogeneous and coating-substr.te blade *** pr.diction is done by quantifying the accumulated dr.plet impact ener.y and evaluating oper.tive conditions over.time per.ods for.which the weather.at the installation site is *** this wor.,we descr.be the modules that compose the pr.diction method,namely the database cr.ation,the tr.ining of the sur.ogate model and their.coupling to build the pr.diction ***,the method is applied to pr.dict the r.maining lifetime and er.sion damage to the blade sections of a r.fer.nce *** evaluate the r.liability of the tool,sever.l site locations(offshor.,coastal,and inland),the coating mater.al and the coating thickness of the blade ar. *** few minutes we ar. able to estimate er.sion after.many year. of *** r.sults ar. in good agr.ement with field obser.ations,showing the pr.mise of the new r.in er.sion pr.diction appr.ach.

关键词： Wind tur.ine blades leading edge er.sion fatigue Pseudo-Dir.ct Numer.cal Simulation(P-DNS) machine lear.ing eblader

基于微信平台构建个人声乐教学资源库的要点阐释

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中国现代教育装备 2024年第15期 13-15页

作者：王天佑 Wang I Ta Cheong ku Wing 马来亚大学创意艺术学院吉隆坡506032 武汉音乐学院音乐教育学院湖北武汉430060

基于“互联网+资源”构建移动学习情境,推进碎片化学习、可视化学习以及混合式学习,是实现个性化教学的改革方向。立足于满足个性化教学需要,分析声乐教学资源库建设的需求,揭示基于微信平台构建个人声乐教学资源库的优势和机理,阐释个... 详细信息

基于“互联网+资源”构建移动学习情境,推进碎片化学习、可视化学习以及混合式学习,是实现个性化教学的改革方向。立足于满足个性化教学需要,分析声乐教学资源库建设的需求,揭示基于微信平台构建个人声乐教学资源库的优势和机理,阐释个人声乐教学资源库建设的要点,探索实现教学资源库建设多元化、个性化、适用化的途径。

关键词：声乐教学资源微信平台个性化学习自动推送资源整合

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Mantle avalanches in a Venus-like stagnant lid planet

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Ear.h and Planetar. Physics 2024年第5期8卷 686-702页

作者： Madeleine C.Ker. Dave r.Stegman Institute of Geophysics and Planetar. Physics Scripps Institution of Oceanography University of California

Stagnant lid planets ar. char.cter.zed by a globe-encir.ling, conducting lid that is thick and str.ng, which leads to r.duced global sur.ace heat flows. Consequently, the mantles of such planets can have war.er.inter.or. than Ear.h, and inter.stingly, a pyr.litic mantle composition under.war.er.conditions is pr.dicted to have a distinctly differ.nt mantle tr.nsition zone compar.d to the pr.sent-day Ear.h(Hir.se, 2002; Stixr.de and Lithgow-Ber.elloni, 2011; Ichikawa et al., 2014; Dannber. et al, 2022). Instead of olivine pr.mar.ly tr.nsfor.ing into its higher.pr.ssur. polymor.hs such as wadsleyite and then r.ngwoodite, at pr.ssur.s cor.esponding to410 km and 520 km depth in Ear.h, r.spectively, it instead tr.nsfor.s into a miner.l assemblage of wadsleyite, major.te, and fer.oper.clase(WMF), and then to major.te + fer.oper.clase(MF), befor. finally tr.nsfor.ing into br.dgmanite at pr.ssur.s cor.esponding to 660 km depth in Ear.h(Stixr.de and Lithgow-Ber.elloni, 2011; Ichikawa et al., 2014). Convective motions in stagnant lid planets ar. dominated by small-scale instabilities(cold dr.ps) for.ing within the mobile r.eological sublayer.under.the r.gid lid. Using ASPECT and a ther.odynamic model of a pyr.litic mantle composition gener.ted by HeFESTo, we show that under.cer.ain conditions, the small dr.ps can pond atop the WMF-MF miner.l phase tr.nsition. The bar.ier.to convective flow ar.ses fr.m the WMF miner.l phase assemblage having an effective negative ther.al expansivity(Stixr.de and Lithgow-Ber.elloni, 2022). Although lar.e-scale downwellings that typically occur.within mobile lid planets ar. able to pass thr.ugh the WMF zone without difficulty(Dannber. et al., 2022; Li r. et al.,2024), the smaller.and less negatively buoyant natur. of downwelling dr.ps in stagnant lid planets ar. mor. susceptible to these effects,which leads to an ephemer.l layer.ng of the mantle. Our.numer.cal models show that in stagnant lid planets with mantle potential temper.tur.s that exceed

关键词： Venus mantle avalanches numer.cal modelling phase tr.nsitions