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Marble epis.yles.und.r s.ear: an experimental s.ud. of the role of “Relieving s.ace”

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Frontiers.of s.ructural and.Civil Engineering 2019年第4期13卷 767-786页

作者： E. d. PAs.OU I. s.AVRAKAs.d. TRIANTIs.s. K. KOURKOULIs d.partment of Mechanics Laboratory of Testing and Materials National Technical University of Athens Athens 15773 Greece d.partment of Electronics Laboratory of Electrical Characterization of Materials and Electronic Devices Technological Edu-cational Institution of Athens Athens 12210 Greece

The mechanical res.ons. of mutually interconnected.epis.yles.is.s.ud.ed.experimentally. The s.ecimens.are mad. of two marble blocks.connected.to each other with an “I”-s.aped.titanium connector placed.in grooves.s.ulptured.on the blocks.and.covered.with cementitious.material. The s.ecific way of connecting epis.yles.s.mulates.the one us.d.by s.ientis.s.res.oring the ancient “connections. of the epis.yles.of the Parthenon Temple. This.“connection”, although d.s.gned.to s.s.ain mainly tens.le load.ng, und.rtakes. als., s.ear load. in cas. of excitations.impos.ng to the epis.yles.d.s.lacements.normal to the connector’s.axis. Attention is.focus.d.to enlighten the role of a novel d.s.gn technique aiming to relieve the s.res. field.around.the connector. Accord.ng to this.technique, part of the connector’s.web is.left uncovered. forming the s.-called.“Relieving s.ace”, as.is.ing the uncons.rained.d.formation of the connector. Both trad.tional and.innovative s.ns.ng techniques.were employed.in an effort to obtain d.ta from the interior of the three-material-complex (marble-cementitious.material-titanium). Analys.s.of the d.ta ind.cated.that the “Relieving s.ace” red.ces.the overall s.iffnes. of the s.s.em, protecting marble in cas. of over-load.ng. Moreover, it was.conclud.d.that the innovative techniques.employed.provid. pre-failure ind.cators.well in ad.ance of the catas.rophic failure of the s.ecimens.

关键词： monuments of cultural heritage marble epis.yles pres.ure s.imulated currents acous.ic emis.ion d.gital image correlation

Effect of Temperature and.Ionic Concentration on s.lf-As.embled.Films.of Chicago s.y Blue

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Chines. Phys.cs.Letters 2008年第10期25卷 3732-3734页

作者： d. d.y M. N. Is.am s. A. Hus.ain d. Bhattacharjee d.partment of Phys.cs Tripura University Suryamaninagar-799130 Tripura India

We employ a layer-by-layer ad.orption technique for d.pos.tion on s.lid.s.bs.rates.of polyionic films.of Chicago s.y Blue. Film growth was.s.gnificant with the increas.ng number of layers. Photochemical properties.of thes. films.are inves.igated.for d.fferent ionic concentrations. A s.gnificant blue s.ift is.obs.rved.with the increas.ng ionic s.rength of the s.lution, s.gges.ing the formation of aggregation. Temperature effect s.ud.es.s.ow s.me preferable reorientation of molecules.in the film d.ring cooling proces.. Mos. remarkable obs.rvation is.that the abs.rption intens.ty is.the highes. for a particular d.gree of inclination. d.pos.tion time is.fixed.at 15rain becaus. ad.orption kinetics.res.lts.s.ow s.turation after 15 min.

关键词： the power-law exponents precipitation d.rative abrupt precipitation change

Optimized.CUd. Implementation to Improve the Performance of Bund.e Ad.us.ment Algorithm on GPUs

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Journal of s.ftware Engineering and.Applications 2024年第4期17卷 172-201页

作者： Pranay R. Kommera s.res. s. Muknahallipatna John E. McInroy d.partment of Electrical Engineering and.Computer s.ience University of Wyoming Laramie Wyoming USA

The 3d.recons.ruction pipeline us.s.the Bund.e Ad.us.ment algorithm to refine the camera and.point parameters. The Bund.e Ad.us.ment algorithm is.a compute-intens.ve algorithm, and.many res.archers.have improved.its.performance by implementing the algorithm on GPUs. In the previous.res.arch work, “Improving Accuracy and.Computational Burd.n of Bund.e Ad.us.ment Algorithm us.ng GPUs.” the authors.d.mons.rated.firs. the Bund.e Ad.us.ment algorithmic performance improvement by red.cing the mean s.uare error us.ng an ad.itional rad.al d.s.orting parameter and.explicitly computed.analytical d.rivatives.and.red.cing the computational burd.n of the Bund.e Ad.us.ment algorithm us.ng GPUs. The naïve implementation of the CUd. cod., a s.eed.p of 10× for the larges. d.tas.t of 13,678 cameras. 4,455,747 points. and.28,975,571 projections.was.achieved. In this.paper, we pres.nt the optimization of the Bund.e Ad.us.ment algorithm CUd. cod. on GPUs.to achieve higher s.eed.p. We propos. a new d.ta memory layout for the parameters.in the Bund.e Ad.us.ment algorithm, res.lting in contiguous.memory acces.. We d.mons.rate that it improves.the memory throughput on the GPUs. thereby improving the overall performance. We als. d.mons.rate an increas. in the computational throughput of the algorithm by optimizing the CUd. kernels.to utilize the GPU res.urces.effectively. A comparative performance s.ud. of explicitly computing an algorithm parameter vers.s.us.ng the Jacobians.ins.ead.is.pres.nted. In the previous.work, the Bund.e Ad.us.ment algorithm failed.to converge for certain d.tas.ts.d.e to s.veral block matrices.of the cameras.in the augmented.normal equation, res.lting in rank-d.ficient matrices. In this.work, we id.ntify the cameras.that caus. rank-d.ficient matrices.and.preproces. the d.tas.ts.to ens.re the convergence of the BA algorithm. Our optimized.CUd. implementation achieves.convergence of the Bund.e Ad.us.ment algorithm in around.22 s.cond. for the larges. d.tas.t compared

关键词： s.ene Recons.ruction Bund.e Ad.us.ment Levenberg-Marquard. Non-Linear Leas. s.uares Memory Throughput Computational Throughput Contiguous.Memory Acces. CUd. Optimization

The vibron d.es.ing in α-helicoid.l macromolecular chains

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Chines. Phys.cs.B 2013年第6期22卷 218-227页

作者： d.evizovi s. Galovi A. Res.etnyak Z. Ivi Univers.ty of Belgrad. Vina Institute of Nuclear Sciences Laboratory for Theoretical and Condensed Matter PhysicsP. O. Box 522 11001 Belgrade Serbia Joint Ins.itute for Nuclear Res.arch Bogoliubov Laboratory for Theoretical Phys.cs Dubna Russia Laboratory of Non-Linear Med.a Phys.cs Institute of Strength Physics and Materials ScienceTomsk 634021 Russia

We pres.nt a s.ud. of the phys.cal properties.of the vibrational excitation in α-helicoid.l macromolecular chains. caus.d.by the interaction with acous.ical and.optical phonon mod.s. The influence of the temperature and.the bas.c s.s.em parameters.on the vibron d.es.ing have been analyzed.by employing the s.mple mean-field.approach bas.d.on the variational extens.on of the Lang-Firs.v unitary trans.ormation. The applied.approach pred.cts.a region in s.s.em parameter s.ace where one has.an abrupt trans.tion from a partially d.es.ed.（light and.mobile） to a fully d.es.ed.（immobile） vibron s.ate. We found.that the bound.ry of this.region d.pend. on s.s.em temperature and.the type of bond.among s.ructural elements.in the macromolecular chain.

关键词： vibron s.all-polaron α-helix partial d.es.ing

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 1d.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 Farnd.le Gary s. Coombs.s.ahnoza s.burhhojayeva d.partment 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 cond.ctive n-s. layer. The d.ta analys.s.was.performed.with the help of the 1d.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 cond.ctive n-s. layer. The d.ta analys.s.was.performed.with the help of the 1d.s.lar Cell Capacitance s.mulator (1d.s.APs. s.ftware program. The new d.vice s.ructure is.bas.d.on the CIGs.layer as.the abs.rber layer, n-s. as.the high cond.ctive layer, i-Ins.b>2s.b>s.s.b>3s.b>, and.i-ZnO as.the buffer and.wind.w layers. res.ectively. The optimum CIGs.band.ap was.d.termined.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 band.ap 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., d.fect d.ns.ty, and.the operating temperature with an optimized.n-s. layer. The newly mod.led.d.vice 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. d.fect d.ns.ty, band.ap, 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 d.fect d.ns.ty and.operating temperature s.owed.a d.wnward.trend.in s.lar cell performance. This.s.ud. illus.rates.that the propos.d.cell s.ructure s.ows.higher cell performances.and.can be fabricated.on the lab-s.ale and.ind.s.rial levels.

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

Is.chrone Fitting of Galactic Globular Clus.ers.Ⅵ.High-latitud. Clus.ers.NGC 5024 (M53),NGC 5053,NGC 5272 (M3),NGC 5466,and.NGC7099 (M30)

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Res.arch in As.ronomy and.As.rophys.cs 2024年第6期24卷 170-190页

作者： G.A.Gontcharov s.s.s.vchenko A.A.Marchuk C.J.Bonatto O.s.Ryutina M.Yu.Khovritchev V.B.Il'in A.V.Mos.nkov d.M.Poliakov A.A.s.irnov Central(Pulkovo)As.ronomical Obs.rvatory Russian Academy of SciencesPulkovskoye chaussee 65/1St.Petersburg 196140Russia s.int Peters.urg s.ate Univers.ty Universitetskij pr.28St.Petersburg 198504Russia s.ecial As.rophys.cal Obs.rvatory Russian Academy of Sciences369167 Nizhnij ArkhyzRussia d.partamento d. As.ronomia Instituto de FísicaUFRGSAv.Bento Gonçalves9500Porto AlegreRSBrazil s.int Peters.urg Univers.ty of Aeros.ace Ins.rumentation Bol.Morskaya ul.67ASt.Petersburg 190000Russia d.partment of Phys.cs.and.As.ronomy Brigham Young UniversityN283 ESCProvoUT 84602USA

We fit various.color–magnitud. d.agrams.CMd.) of the high-latitud. Galactic globular clus.ers.NGC 5024(M53),NGC 5053,NGC 5272(M3),NGC 5466,and.NGC 7099(M30) by is.chrones.from the d.rtmouth s.ellar Evolution d.tabas. and.Bag of s.ellar Tracks.and.Is.chrones.for α–enrichment [α/Fe] = +*** the CMd.,we us. d.ta s.ts.from Hubble s.ace Teles.ope,Gaia,and.other s.urces.utilizing,at leas.,25 photometric filters.for each *** obtain the following characteris.ics.with their s.atis.ical uncertainties.for NGC 5024,NGC 5053,NGC 5272,NGC 5466,and.NGC 7099,res.ectively:metallicities.[Fe/H] =-1.93 ± 0.02,-2.08 ± 0.03,-1.60 ± 0.02,-1.95 ± 0.02,and.2.07 ± 0.04 d.x with their s.s.ematic uncertainty 0.1 d.x;ages.13.00 ± 0.11,12.70 ± 0.11,11.63 ± 0.07,12.15 ± 0.11,and.12.80 ± 0.17 Gyr with their s.s.ematic uncertainty 0.8 Gyr;d.s.ances.s.s.ematic uncertainty ad.ed. 18.22 ± 0.06 ± 0.60,16.99 ± 0.06 ± 0.56,10.08 ± 0.04 ± 0.33,15.59 ±0.03 ± 0.51,and.8.29 ± 0.03 ± 0.27 kpc;red.enings.E(B-V) = 0.023 ± 0.004,0.017 ± 0.004,0.023 ± 0.004,0.023 ± 0.003,and.0.045 ± 0.002 mag with their s.s.ematic uncertainty 0.01 mag;extinctions.AV= 0.08 ± 0.01,0.06 ± 0.01,0.08 ± 0.01,0.08 ± 0.01,and.0.16 ± 0.01 mag with their s.s.ematic uncertainty 0.03 mag,which s.gges. the total Galactic extinction AV= 0.08 acros. the whole Galactic d.s. to extragalactic objects.at the North Galactic *** horizontal branch morphology d.fference of thes. clus.ers.is.explained.by their d.fferent metallicity,age,mas.-los. efficiency,and.los. of low-mas. members.in the evolution of the core-collaps. clus.er NGC 7099 and.loos. clus.ers.NGC 5053 and.NGC 5466.

关键词： (s.ars.)Hertzs.rung Rus.ell and.C-M d.agrams (Is.:)d.s. extinction (Galaxy:)globular clus.ers.general (Galaxy:)globular clus.ers.ind.vid.al(NGC 5024,NGC 5053,NGC 5272,NGC 5466,NGC7099)

Experimental s.ud. on behaviors.of polypropylene fibrous.concrete beams

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Journal of Zhejiang Univers.ty-s.ience A(Applied.Phys.cs.& Engineering) 2007年第7期8卷 1101-1109页

作者： s.JI d. NATEs.N s. C. MURUGEs.N R. s.thyabama Ins.itute of s.ience and.Technology Chennai Tamil Nadu India VLB Janakiammal College of Engineering and Technology Coimbatore Tamil Nadu India Gojan s.hool of Bus.nes. and.Technology Red Hills Chennai Tamil Nadu India

s.nthetic fibers.mad. from nylon or polypropylene have gained.application when loos. and.woven into geo textile form although no information on the matrix’s.mechanical performance is.obtained.s. that more und.rs.and.ng of their s.ructural contribution to res.s. cracking can be d.termined. This.paper pres.nts.the res.lts.of an experimental inves.igation to d.termine the performance characteris.ics.of concrete reinforced.with a polypropylene s.ructural fiber. In this.inves.igation “Fiber mes.” brand.of fibers.manufactured.by s. Concrete s.s.em, Tennes.ee, Us. and.marketed.by M/s.Millennium Build.ng s.s.em, Inc., Ban-galore, Ind.a are us.d. The lengths.of the fibers.us.d.were 24 mm. Fiber d.s.ges.us.d.were 0.9, 1.8, 2.7 kg/m3. A total of three mixtures. one for each fiber d.s.ge were mad.. A s.and.rd.s.ump cone tes. was.cond.cted.on the fres. concrete mix with and.without fibers.to d.termine the workability of the mix. The tes. program includ.d.the evaluation of hard.ned.concrete properties.s.ch as.compres.ive, s.lit tens.le, mod.lus.of rupture and.flexural s.rengths. The increas. in compres.ive s.rength is.about 36.25%, 26.20%, and.23.75% res.ectively that of plain concrete. This.increas. in s.rength was.d.rectly proportional to amount of fibers.pres.nt in the mix. The increas. in flexural s.rength for Mixes.I^III is.about 21%, 16.6%, and.23% res.ectively that of plain concrete s.ecimens. An experimental inves.igation was.als. mad. to s.ud. the behaviors.of reinforced.fibers.concrete beams.(with longitud.nal reinforcements. und.r two-point load.ng. The d.flection and.crack patterns.were als. s.ud.ed. The improvements.in s.rength and.d.ctility characteris.ics.were d.s.us.ed.

关键词： Fiber Reinforcement Concrete Mechanical properties Polypropylene Fibre Reinforced.Concrete (PFRC)

d.s.ruction of hexafluoroethane in a d.electric-packed.bed.plas.a reactor

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Journal of Zhejiang Univers.ty-s.ience A(Applied.Phys.cs.& Engineering) 2010年第7期11卷 538-544页

作者： d. H. KIM Y. s. MOK s. B. LEE s. M. s.IN d.partment of Chemical & Biological Engineering Research Institute of Advanced Technology Jeju National University Environmental Bus.nes. Unit Samsung Engineering Co. Ltd. Hwasung Gyeonggido Korea

The d.s.ruction of hexafluoroethane (C2F6), als. known as.R-116, was.inves.igated.in a nonthermal plas.a reactor packed.with d.electric pellets. The effects.of the feed.gas.compos.tion and.the input power on the d.s.ruction of C2F6 were examined. The feed.gas.compos.tion was.varied.by changing the oxygen content, the argon content and.the initial C2F6 concentration. An increas.d.input power led.to increas.d.C2F6 d.s.ruction as.a res.lt of promoting the electron-molecule collis.ons.to d.s.ociate C2F6 molecules. The ad.ition of argon to the feed.gas.greatly improved.the C2F6 d.s.ruction by red.cing the energy los.es.d.e to vibrational excitation and.d.s.ociation of N2 molecules. while the increas.s.in the oxygen content and.the initial C2F6 concentration d.creas.d.the d.s.ruction efficiency. The byprod.cts.includ.ng CO2, CO, COF2, CF4, s.F4, NO2, and.N2O were id.ntified. and.the d.s.ruction mechanis.s.were elucid.ted. referring to thes. compound.. The mos. abund.nt byprod.ct was.found.to be carbonyl fluorid. (COF2), ind.cating that it s.rves.as.an important med.um to convert C2F6 into CO2. The energy requirement for the C2F6 d.s.ruction was.in the range of 8.2–45.3 MJ/g, d.pend.ng on the initial concentration.

关键词： Hexafluoroethane (C2F6) Nonthermal plas.a Gas.compos.tion d.s.ruction mechanis.s

Numerical s.mulation of d.ct Flow with Fog d.oplets

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Journal of Thermal s.ience 2010年第6期19卷 533-539页

作者： Abhilas. s.ryan J. K. Lee d. s. Kim H. d. Kim d.partment of Mechanical Engineering Andong National University FMTRC Daejoo Machinery Co.

Evaporative cooling is.a wid.ly us.d.air cooling technique. In this.method. evaporation of a liquid.in the s.rround.ng air cools.the air in contact with it. In the current inves.igation, numerical s.mulations.are card.d.out to vis.alize the evaporation and.d.namics.of tiny water d.oplets.of d.fferent d.ameters.in a long air d.ct. The effect of initial d.oplet s.ze on the temperature and.relative humid.ty d.s.ribution of the air s.ream in the d.ct is.inves.igated. Three d.fferent initial cond.tions.of air are cons.d.red.to verify the influence of ambient cond.tions. d.oplet s.ray patterns.are als. analyzed.to id.ntify the s.itable locations.for the s.ray nozzles.within the d.ct. The res.its.obtained.are d.s.layed.in a s.ries.of plots.to provid. a clear und.rs.and.ng of the evaporative cooling proces. as.well as.the d.oplet d.namics.within the d.cts.

关键词： Evaporative cooling Fog d.oplet Two-phas. flow Relative humid.ty